PARSUN OUTBOARD MOTORS OWNER'S MANUAL

PARSUN F15A BM/BW/FW F20A BM/BW/FW F15AEFI BM/BW/FW F20AEFI BM/BW/FW

Table of contents

1. Main components and General information

1.1 Main components

Main components of the F15A F20A outboard motor overview

Main components of the outboard motor front view

Main components of the outboard motor side view

Main components of the outboard motor rear view

  1. Top cowling
  2. Top cowling lock handle
  3. Drain screw
  4. Anti-cavitation plate
  5. Propeller
  6. Cooling water inlet
  7. Tilt & trim rod
  8. Clamp bracket
  9. Tiller handle
  10. Starters handle
  11. Warning indicator
  12. Gear shift lever
  13. Engine stop button
  14. Throttle friction adjuster
  15. Throttle grip
  16. Clamp bolt
  17. Fuel joint
  18. Fuel tank
  19. Remote control box

A portable fuel tank includes parts as follows:

Portable fuel tank front view

Portable fuel tank rear view with fuel gauge

    1. Fuel tank cap 3. Air vent screw
    1. Fuel joint 4. Fuel gauge

WARNING:

The fuel tank supplier with this engine could only be used as supply of fuel for its running and must not be as a fuel storage container.

Remote control

The remote control lever actuates both the shifter and the throttle. The electrical switches are mounted on the remote control box.

    1. Remoter control lever
    1. Neutral interlock trigger
    1. Neutral throttle lever
    1. Main switch/choke switch
    1. Engine stop lanyard switch
    1. Throttle friction adjuster

Remote control box with switches and lever

Remote control lever

Moving the lever forward from the neutral position engages forward gear. Pulling the lever back from neutral engages reverse. The engine will continue to run at idle until the lever is moved about 35º (a detent can be felt). Moving the lever farther opens the throttle, and the engine will begin to accelerate.

    1. Neutral "N"
    1. Forward "F"
    1. Reverse "R"
    1. Shift
    1. Fully closed
    1. Throttle
    1. Fully open

Remote control lever positions diagram

Neutral interlock trigger

To shift out of neutral, first pull the neutral interlock trigger up.

Neutral interlock trigger location on remote control

  1. Neutral interlock trigger

Neutral throttle lever

To open the throttle without shifting into either forward or reverse, put the remote control lever in the neutral position and lift the neutral throttle lever.

NOTE:

The neutral throttle lever will operate only when the remote control lever is in neutral. The remote control lever will operate only when the neutral throttle lever is in the closed position.

    1. Fully open
    1. Fully closed

Neutral throttle lever open and closed positions

1.2 General information

1.2.1 Specification

Main technical data:

man teenhoar ada.
ItemsDataItemsData
Type of engiineTwo cylinders,4-strokeWeight (BML/BWL/FWL)53.7Kgs/55.7Kgs/54.7Kgs
Displacement362cm 3Recommended fuelUnleaded regular gasoline
Bore X strokе63mm×58.1mmFuel tank capacity24L
Gear ratioCarburetor2.08 (27/13)December ded engine eilCA F4014/20 or CA F4014/40
EFI1.85(24/13)Recommended engine oilSAE10W30 or SAE10W40
Overall length(B/FW)988mm/665mmEngine oil quantity1.6L
Overall width(B/FW)420mm/430mmRecommended gear oilHypoid gear oil SAE # 90
Overall height (S)1070mmGear oil quantity250cm 3
Overall height (L)1197mmSpark plugDPR7EA-9
Weight (BMS/BWS/FWS)51.7Kgs/53.7Kgs/52.7KgsSpark plug gap0.8~0.9mm

Main performance:

ItemsDataItemsData
Maximum autaut14.7Kw/5500rpm(20HP)TimbtonianSpark plug18.0Nm
Maximum output11 Kw/5000rpm(15HP)TighteningPropeller nut17.0Nm
Full throttle operating range5000~6000rpmtorque forEngine oil drain bolt28.0Nm
Idling speed (in neutral)1050±50rpmengineEngine oil filter18.0NM
Valve clearance IN(cool engine)0.15~0.25mm
Valve clearance EX(cool engine)0.25~0.35mm

1.2.2 Fueling instruction

Fueling instructions

Recommended gasoline:

Regular unleaded gasoline,If it is not available, then premium gasoline.

If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel. If leaded gasoline is usually used, engine valves and related parts should be inspected after every 100 hours of operation.

WARNING:

  • Do not smoke when refueling, and keep away from sparks, flames, or other sources of Ignition.
  • Stop engine before refueling.
  • Refuel in a well-ventilated area; refuel portable fuel tanks off the boat.
  • Do not overfill the fuel tank.
  • Take care not to spill gasoline, if gasoline spills, wipe it up immediately.
  • Tighten the filler cap securely after refueling.
  • If you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eye, get immediate medical attentions.
  • If any gasoline spills onto your skin, immediately wash with soap and water. Change clothing if gasoline spills on it.
  • Touch the fuel nozzle to metal components to prevent electrostatic sparks.

CAUTION:

Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign matter.

Engine oil:

Recommended engine oil: 4-stroke outboard motor oil SAE10W30 and SAE10W40(1.6L).

WARNING:

  • Do not start the engine when the oil level is nil or low. Serious damage might occur.
  • Always check the oil level before starting the engine.

CAUTION:

All 4-stroke engines are shipped from the factory without engine oil.

1.2.3 Propeller selection

The performance of your outboard motor will be critically affected by your choice of propeller, as an incorrect choice could adversely affect performance. The outboard motor is fitted with propellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate. Dealers stock a range of propellers and can advise you and install a propeller on your out board that is best suited to your application.

For a greater boat load and a low engine speed, a smaller-pitch propeller is more suitable. Conversely, a large-pitch propeller is more suitable for a smaller operating load as it enables the correct engine speed to be maintained.

2. Operation

2.1 Installation

Mount the outboard motor on the center line (keel line) of the boat. For boats without a keel or which are asymmetrical, consult your dealers.

Outboard motor mounted on boat center line

  1. Center line (keel line)

NOTE:

During water testing check the buoyancy of the boat, at rest, with its maximum load. Check that the static water level on the exhaust housing is low enough to prevent water entry into the power head, when water rises due to waves when the outboard is not running.

WARNING:

  • Overpowering a boat could cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufacturer.
  • Improper mounting of the outboard motor could result in hazardous conditions. Your dealer or other person experienced in proper rigging should mount the motor. If you are mounting

the motor yourself, you should be trained by an experienced person.

The information presented in this section is intended as reference only. Proper mounting depends in part on experience and the specific boat and motor combination.

2.1.1 Mounting height

The mounting height of the outboard motor greatly affects your boat running efficiency. If the mounting height is too high, cavitation tends to occur, thus reducing the propulsion. If the mounting height is too low, the water resistance will increase and thereby reduce engine efficiency. Mount the outboard motor so that the anti-cavitation plate is between the bottom of the boat and a level 25mm below it.

Mounting height diagram showing anti-cavitation plate position

NOTE:

The optimum mounting height of the outboard motor is affected by the boat and motor combination and the desired use. Test runs at a different height can help determine the optimum mounting height. For further information, consult your "PARSUN" dealer or boat manufacturer.

2.1.2 Clamping the outboard motor

  1. Tighten the transom clamp screw evenly and securely. Occasionally check the clamp screws for tightness during operation of the outboard motor because they could become loose due to engine vibration.

Transom clamp screw tightening procedure

CAUTION:

Outboards that use clamp bracket screws alone are INSUFFICIENT to properly and safely secure the outboard to the Transom. Proper installation of the outboard includes bolting the engine to the boat through the transom.

WARNING:

Loose clamp screws could allow the outboard motor to fall off or move on the transom. This could cause loss of control. Make sure the clamp screws are tightened securely, occasionally check the screws for tightness during operation.

  1. If the engine restraint cable attachment is equipped on your engine, an engine restraint cable or chain should be used. Attach to a secure mounting point on the boat to avoid the engine being completely lost if it accidentally falls off the transom.

Engine restraint cable attachment point on bracket

  1. Secure the clamp bracket to the transom using the appropriate bolts. For details, consult your dealer.

WARNING:

Avoid using bolts, nuts or washers inappropriate. After tightening, test running the engine and check their tightness.

2.2 Breaking in engine

Your new engine requires a period of breaking to allow mating surfaces of moving parts to wear in evenly.

CAUTION:

Failure to follow the break-in procedure could result in reduced engine life or even severe engine damage.

  1. for the first hour of operation:

Run the engine at 2000 r/min or at approximately half throttle.

  1. for the second hour of operation:

Run the engine at 3000 r/min or at approximately three-quarter throttle.

  1. for the next eight hours of operation:

Avoid continuous operation at full throttle for more than five minutes at a time.

  1. Operate the engine normally.

2.3 Pre-operation checks

Fuel

  • ·Check to be sure you have plenty of fuel for your trip.
  • ·Make sure there are no fuel leaks or gasoline fumes.
  • ·Check fuel line connections to be sure they are tight.
  • ·Be sure the fuel tank is positioned on a secure, flat surface, and that the fuel line is not twisted or flattened, or likely to contact sharp objects.

Controls

  • ·Check throttle, shift and steering for proper operation before starting the engine.
  • ·The controls should work smoothly, without binding or unusual free play.
  • ·Look for loose or damaged connections.
  • ·Check operation of the starter and stop switches when the outboard motor is in the water.

CAUTION:

  • ·Do not start the engine out of water. Overheating and serious engine damage can occur.
  • ·Check the engine and engine mounting.
  • ·Look for loose or damaged fasteners.
  • ·Check the propeller for damage.

Checking the engine oil level

  1. Put the outboard motor in an upright position (not tilted).

Outboard motor in upright position for oil check

  1. Check the oil level using the dipstick to be sure the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark.

Oil dipstick location on engine

Oil level upper and lower marks on dipstick

  1. Oil dipstick 2 Upper level mark 3.Lower level mark

CAUTION:

Be sure to completely insert the dipstick into the dipstick guide.

2.4 Filling fuel

WARNING:

Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition.

    1. Remove the fuel tank cap.
    1. Carefully fill the fuel tank.
    1. Securely close the cap after filling the tank. Wipe up any spilled fuel.

2.5 Starting engine

  1. Connect fuel joints securely after loosing the air vent screw on the fuel tank cap (2 or 3 turns).

Fuel tank cap air vent screw loosening

Fuel joint connection on outboard motor

  1. Connect fuel joints securely and squeeze the primer pump with the outlet end up until you feel it becomes firm (if equipped the fuel joint).

Primer pump squeezing with outlet end up

Primer pump becomes firm when primed

(EFI Manual start model)

Remove the vent valve cover, connect the air venting kit in the accessories to the vent valve, and insert the rubber tube of the air venting kit into the fuel tank filler. Pull the starter handle repeatedly until fuel can be seen in the translucent tube of the air venting kit. Remove the air venting kit, and start the engine. If the engine cannot be started, re-connect the air venting kit and repeat the air venting process until the engine can be started. Remove the air venting kit and screw the vent valve cover.

(EFI Electric start model)

Remove the vent valve cover, connect the air venting kit in the accessories to the vent valve, and insert the rubber tube of the air venting kit into the fuel tank filler. Turn the start switch to "ON" position(Close the circuit) and keep for 5 seconds, then turn the start switch to "OFF"(Open the circuit). Repeat until the fuel can be seen in the translucent tube of the air venting kit. Remove the air venting kit, and start the engine. If the engine cannot be started, re-connect the air-venting kit and repeat the air venting process until the engine can be started. Remove the air venting kit and screw the vent valve cover.

NOTE:

  • This step is only required for a new outboard, or an outboard that has stopped because of running out of fuel, or has been stored long or used first time after being drained off fuel due to repair.
  • The rubber tube end should be 2~3cm above the fuel level of the fuel tank, to ensure that the fuel flows back into the fuel tank when the air is vented from the vent valve.

If the rubber tube is not long enough and the fuel tank is difficult to move, connect the rubber tube with an outer fuel pipe to extend the length and make sure that the fuel flows back into the fuel tank.

Vent valve location on outboard motor

Vent valve cover removal

Air venting kit connected to vent valve

Air venting kit rubber tube inserted in fuel tank

Vent valve vent valve cover Air venting kit

    1. Squeeze the primer pump with the outlet end up again until you feel it becomes firm. (EFI model)
    1. Place the gear shift lever in neutral.

Gear shift lever placed in neutral position

Engine stop switch lanyard attached to clothing

NOTE:

The start-in-gear protection device prevents the engine from starting except when in neutral. Attach the engine stop switch lanyard to secure place on your clothing, or your arm or leg. Then install the lock plate on the other end of the lanyard into the engine stop switch.

WARNING:

  • The engine must be starting in neutral otherwise damage starter and hazard can occur.
  • Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it could become entangled and preventing it from functioning
  • Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

Engine stop switch with lock plate installed

Engine stop lanyard routing on outboard motor

  1. Place the throttle grip in the "START" position (Carburetor model with manual start).

Place the throttle grip to the min position (EFI model with manual start) Turn the main switch to "ON" (Electric start).

Throttle grip in START position for carburetor model

Throttle grip at minimum position for EFI model

Main switch turned to ON position for electric start

  1. Pull the manual starter handle slowly until you feel resistance. Then give a strong pull straight to crank and start the engine. Repeat if necessary. Turn the main switch to "START" (start), and hold it for a maximum or 5 seconds (Electric start).

Pulling the manual starter handle to crank engine

Main switch turned to START position for electric start

    1. After the engine starts, slowly return the manual starter handle to its original position before releasing it. Immediately release the main switch and allow it to return to "ON" (on) after the engine starts (Electric start).
    1. Slowly return the throttle grip to the fully closed position.

CAUTION:

  • · When the engine is cold, it needs to be warmed up.
  • · If the engine does not start on the first try, repeat the procedure. If the engine fails to start after 4 or 5 tries, open the throttle a small amount (between 1/8 and 1/4), and try again. (Carburetor model)
  • · If the engine does not start on the first try, repeat Procedure 3 and 4, and try again. (EFI model)

NOTE:

Never turn the main switch to "START" (start) while the engine is running.

Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not start after 5 seconds of cranking, return the main switch to "ON" (on), wait 10 seconds, and then crank the engine.

2.6 Warm up engine

  1. After starting the engine, place the gear shift lever in neutral. For approximately the first 3 minutes after starting, warm up the engine by operating at one fifth throttle or less. Otherwise, it will shorten engine life.
  2. Check for steady flow of water from the cooling water pilot hole.

Cooling water pilot hole with steady water flow

CAUTION:

  • · If water is not flowing out of the hole at all times while the engine is running, stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked.
  • · If the problem cannot be located and corrected, consult your dealer.

2.7 Shifting

WARNING:

Before shifting, make sure there are no swimmers or obstacles in the water near you.

CAUTION:

To shift from forward to reverse or vice versa, first close the throttle so that the engine idles (or runs at low speeds).

2.7.1 Forward

  1. Place the throttle grip in the fully closed position.

Throttle grip in fully closed position for forward shift

  1. Move the gear shift lever quickly and firmly from neutral to forward. Pull up the neutral interlock rigger and move the remote control lever quickly and firmly from neutral to forward. (Remote control)

Gear shift lever moved from neutral to forward

Remote control lever moved to forward position

2.7.2 Reverse

WARNING:

When operating in reverse, go slowly. Do not open the throttle more than half. Otherwise the

boat could become unstable, which could result in loss of control and an accident.

  1. Place the throttle trip in the fully closed position.

Throttle grip in fully closed position for reverse shift

  1. Move the gear shift lever quickly and firmly from neutral to reverse.

Check that the tilt lock lever is in the lock position. Pull up the neutral interlock rigger and move the remote control lever quickly and firmly from neutral to reverse. (Remote control)

Gear shift lever moved from neutral to reverse

Remote control lever moved to reverse position

2.8 Tiller

1. Change direction

To change direction, move the tiller handle to the left or right as necessary.

Tiller handle moved left and right for steering

2. Change speed

Turn the grip counterclockwise to increase speed and clockwise to decrease speed.

3. Throttle indicator

The throttle indicator is on the throttle grip. The fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation.

Throttle indicator on throttle grip showing fuel consumption

  1. Throttle indicator

4. Throttle friction adjuster

The throttle friction adjuster is on the tiller handle, which provides adjustable resistance to movement of the throttle grip, and can be set according to operator preference. To increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise. When constant speed is desired, tighten the adjuster to maintain the desired throttle setting.

Throttle friction adjuster on tiller handle

Throttle friction adjuster clockwise and counterclockwise

WARNING:

Do not over-tighten the friction adjuster. If there is too much resistance, it could be difficult to move throttle lever or grip, which could result in an accident.

2.9 Stopping engine

NOTE:

Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stopping the engine immediately after operating at high speed is not recommended.

  1. Push and hold the engine stop button until the engine comes to a complete stop.

Engine stop button pushed to stop engine

Engine stop switch lanyard removal stops engine

NOTE:

If the outboard motor is equipped with an engine stop switch lanyard, the engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop switch.

  1. Tighten the air vent screw on the fuel tank cap.

Air vent screw tightened on fuel tank cap

  1. Disconnect the fuel line.

Fuel line disconnection from outboard motor

Fuel line disconnect detail view

2.10 Trimming outboard motor

There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim angle.

    1. Stop the engine.
    1. Remove the trim rod from the clamp bracket while slightly tilting the outboard motor up.

Trim rod removal from clamp bracket hole

  1. Reposition the rod in the desired hole. Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.

Trim angle adjustment positions on clamp bracket

Stop the engine before adjusting the trim angle.

Use care to avoid being pinched when removing or installing the rod.

Use caution when trying a trim position for the first time. Increase speed gradually and watch for any signs of instability or control problems.

Improper trim angle can cause loss of control.

Three trim positions showing bow up and bow down

Above illustrations from left from right show three positions: Bow leaning up, Bow leaning up too high and Bow leaning down.

With the normal bow leaning up, the water resistance is reduced and the boat may have a greater stability and efficiency.

Too much trim-out puts the bow of the boat too high in the water. It will increase the air and water resistance of the boat body and reduce the efficiency of the outboard. Excessive bow up can also cause the boat to hop in the water, which could throw the operator and passengers over board.

Bow down causes the boat to "plow" through the water, giving extreme resistance to the boat. It makes

harder to increase speed and steer the boat. Excessive bow down at the high speeds can even make the boat's head plunge into water.

2.11 Tilting up and down

If the engine will be stopped for some time or if the boat is moored in shallows, the outboard motor should be tilted up to protect the propeller and casing from damage by collision with obstructions, and also to reduce corrosion.

WARNING:

Be sure all people are clear of the outboard motor when tilting up and down, also be careful not to pinch any body parts between the drive unit and engine bracket.

NOTE:

Do not tilt up the engine by pushing the tiller handle because this could break the handle. The outboard motor cannot be tilted when in reverse.

2.11.1 Tilting up

  1. Place the gear shift lever in neutral

Gear shift lever in neutral for tilting up

Gear shift lever neutral position detail

  1. Tighten the steering friction adjuster by turning it clockwise to prevent the motor from turning freely.

Steering friction adjuster tightened clockwise

3.Disconnect the fuel line from the outboard motor.

Fuel line disconnected from outboard before tilting

  1. Place the tilt lock lever (if equipped) in the up position.

Tilt lock lever placed in up position

  1. Hold the rear handle and tilt the engine up fully until the tilt support lever automatically locks.

Engine tilted up fully with tilt support locked

2.11.2 Tilting down

    1. Slightly tilt the outboard motor up.
    1. Slowly tilt the outboard motor down while place the tilt lock lever in the down position.

Tilt lock lever placed in down position for tilting down

  1. Loose the steering friction adjuster by turning it Counterclockwise, and adjust the steering friction according to operator preference.

Steering friction adjuster loosened counterclockwise

WARNING:

If there is too much resistance it could be difficult to steer, which could result in an accident.

2.12 Cruising in other conditions

2.12.1 Cruising in shallow water

The outboard motor can be tilted up partially to allow operation in shallow water.

WARNING:

Be sure to place the gear shift in neutral before cruising in shallow water or while tilting up the outboard motor.

Return the outboard motor to its normal position as soon as the boat is back in deeper water.

CAUTION:

The cooling water inlet on the lower unit should be not above the surface of the water when setting up for and cruising in shallow water. Otherwise severe damage from overheating can result. For tilting procedure, see section 2.10.

2.12.2 Cruising in salt water

After operating in salt water, wash out the cooling water passages with fresh water to prevent them from becoming clogged with salt deposits.

2.13 Warning indicators and solutions

The engine equips oil pressure warning indicator and water temperature warning indicator.

If the oil pressure becomes too low (insufficient engine oil) or too high (too much engine oil) when engine speed is over 2200rpm, the oil pressure warning indicator will be activated, and the engine will enter into the protection status, which limits the rpm. In such status, please stop the engine as soon as it is safe to do so, and check the engine oil level.

NOTE:

  • 1. Check the oil level. Add oil as needed if insufficient oil, or drain out extra if too much oil. Refer to section 2.3.
  • 2. If the oil level is proper and the warning device does not switch off, consult your dealer.

If the water temperature rises too high when engine speed is over 2200r/min and lasts for over 20 seconds, the water temperature warning indicator will light or blink. The engine is in protection status and engine speed will be limited until the water temperature returns to the normal condition and lasts for over 10 seconds.

NOTE:

Please check the cooling water pilot hole if the temperature warning indicator keeps on:

  • 1. Please check the cooling water inlet and pilot hole if there is no water flow. Clean them if clogged. Otherwise, please consult your dealer.
  • 2. Please consult your dealer if there is the normal flow of cooling water.

WARNING:

Do not start or run the engine before the above warnings are thoroughly checked and resolved, otherwise, serious engine damage could occur.

3. Maintenance

While using the outboard motor, the periodic maintenance is necessary for you to ensure its performance.

WARNING:

Be sure to turn off the engine when you perform maintenance unless otherwise specified.

If you or the owner is not familiar with machine servicing, this work should be done by your dealer or other qualified mechanic.

CAUTION:

If replacement parts are necessary, use only original parts or parts of the same type and of equivalent strength and materials.

3.1 Greasing

Greasing points on the outboard motor

3.2 Cleaning and adjusting spark plug

You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode. If necessary, you should replace the spark plug with another of the correct type.

Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; adjust the gap to specification if necessary.

Spark plug electrode gap measurement with gauge

When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque.

3.3 Checking the fuel system

  1. Check the fuel lines for leaks, crack, or malfunction. If a problem is found, your dealer or other qualified mechanic should repair it immediately.

Fuel line inspection for leaks and cracks

Fuel system connection check points

Fuel leakage inspection diagram

Check for fuel leakage regularly.

If any fuel leakage is found, the fuel system must be repaired by a qualified mechanic.

  1. Check the fuel filter periodically. If foreign matter is found in the filter, clean it.

Fuel filter inspection location on engine

3.3.1 Cleaning the fuel filter

  1. Remove the nut holding the fuel filter assembly if equipped.

Fuel filter assembly nut removal

    1. Unscrew the filter cup, catching any spilled fuel in a rag.
    1. Remove the filter element, and wash it in solvent. Allow it to dry. Inspect the filter element and O-ring of the filter cup to make sure they are in good conditions. Change them if necessary. If any water is found in the fuel, check and clean the portable fuel tanks should be checked and cleaned.

Fuel filter components disassembled showing cup, O-ring, and element

    1. Filter cup 2.O-ring 3. Filter element 4.Filter housing
    1. Reinstall the filter element in the cup. Make sure the O-ring is in position in the cup. Firmly screw the cup onto the filter housing.
    1. Attach the filter assembly to the bracket so that the fuel hoses are attached to the filter assembly. Run the engine and check the filter and lines for leaks.

3.4 Inspecting idling speed

Use a diagnostic tachometer. Results may vary depending on whether the outboard motor is tested in a test water tank with a flusher device, or in the water.

    1. Start the engine and allow it to warm up fully in neutral until it is running smoothly.
    1. Verify whether the idle speed is set to specification. Idle speed:1050±50Rpm

CAUTION:

Correct idling speed inspection is only possible if the engine is fully warmed up. If not warmed up fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult your dealer or other qualified mechanic.

3.5 Changing engine oil

WARNING:

Avoid draining the engine oil immediately after stopping the engine. The oil is hot and should be handled with care to avoid burns.

Be sure the outboard motor is securely fastened to the transom or a stable stand.

CAUTION:

Change the engine oil after the first 10 hours of operation, and every 100 hours or at 6-month intervals thereafter. Otherwise the engine will wear quickly. Change the engine oil when the oil is still warm.

  1. Put the outboard motor in an upright position (not tilted).
  2. Prepare a suitable container that holds a larger amount than the engine oil capacity. Loosen and remove the drain screw while holding the container under the drain hole. Then remove the oil filler cap. Let oil drain completely. Wipe up any spilled oil immediately.

Engine oil drain screw removal with container

Oil draining from engine into container

    1. Put a new gasket on the oil drain screw. Tighten the drain screw.
    1. Add the correct amount of oil through the filler hole. Install the filler cap.
    1. Start the engine and make sure that there are no oil leaks.
    1. Turn off the engine and wait 3 minutes. Recheck the oil level using the dipstick to be sure the level falls between the upper and lower marks.

CAUTION:

The oil should be changed more often when the engine is operated under adverse conditions such as extended trolling.

3.6 Checking wiring and connectors

Check that each grounding wire is properly secured and each connector is engaged securely.

3.7 Checking for leakage

Check that no exhaust or water leaks from the joints between the exhaust cover, cylinder head and body cylinder. Check for oil leaks on the around the engine.

CAUTION:

If any leaks are found, consult your dealer.

3.8 Checking propeller

WARNING:

Before inspecting, removing or installing the propeller, always take actions to ensure the engine will not accidentally starts, such as removing the spark plug caps from the spark plugs, placing the shift control in neutral, and removing the lanyard from the engine stop switch, etc. Serious accident could occur if the engine starts when you are nearby.

Do not use your hand to hold the propeller when loosening or tightening the propeller nut. Put a wood block between the anti-cavitation plate and the propeller to prevent the propeller from turning.

Propeller inspection with wood block for safety

Propeller blade and shaft damage check

    1. Check each of the propeller blades for wear, erosion from cavitation or ventilation, or other damage.
    1. Check the propeller shaft for damage.
    1. Check the splines' shear pin for wear or damage.
    1. Check for fish line tangled around the propeller shaft.
    1. Check for the propeller shaft oil seal for damage.

3.8.1 Removing the propeller

    1. Straighten the cotter pin and pull it out using a pair of pliers.
    1. Remove the propeller nut, washer, and spacer (if equipped).
    1. Remove the propeller and thrust washer.

3.8.2 Installing the propeller

CAUTION:

Be sure to install the thrust washer before instating the propeller, otherwise the lower case and propeller boss could be damaged.

Be sure to use a new cotter pin and bend the ends over securely. Otherwise the propeller could come off during operation and be lost.

    1. Apply a marine grease or corrosion resistant grease to the propeller shaft.
    1. Install the spacer (if equipped), thrust washer, and propeller on the propeller shaft.
    1. Install the spacer (if equipped) and the washer.
    1. Tighten the propeller nut. Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.

3.9 Changing gear oil

WARNING:

Be sure the outboard motor is securely fastened to the transom or a stable stand. Never get under the lower unit while the outboard motor is tilted, even when the tilt support lever or knob is locked. Serious injury could occur if the motor falls.

    1. Tilt the outboard motor so that the gear oil drain screw is at the lowest point possible.
    1. Place a suitable container under the gear case.
  1. Remove gear oil drain screw.

Gear oil drain screw and oil level plug location

    1. Gear oil drain screw
    1. Oil level plug

CAUTION:

Change the gear oil after the first 10 hours of operation, and every 100 hours or at 6-month intervals thereafter. Otherwise the gear will wear quickly.

  1. Remove the oil level plug to allow the oil to drain completely.

CAUTION:

Inspect the used oil after it has been drained. If the oil is milky, water is getting into the gear case which can cause gear damage. Consult your dealer.

    1. Use a flexible or pressurized filling device; inject the gear oil into the gear oil drain screw hole. (250cm3)
    1. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug (If necessary, change the seal spacer).
  1. Insert and tighten the gear oil drain screw (If necessary, change the seal spacer).

3.10 Cleaning fuel tank

WARNING:

  • Keep away from sparks, cigarettes, flames, or other sources of ignition when cleaning the fuel tank.
  • Cleaning the fuel tank in a well-ventilated open air.
    1. Empty the fuel tank into an approved container.
    1. Pour a small amount of suitable solvent into the tank. Install the cap and shake the tank. Drain the solvent completely.
    1. Pull the fuel joint assembly out of the tank.
    1. Clean the filter in a suitable cleaning solvent and allow it to dry.
    1. Replace the gasket with a new one. Reinstall the fuel joint assembly and tighten the screws firmly.

3.11 Checking and replacing anode(s)

Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult your dealer for replacement of external anodes.

CAUTION:

Do not paint anodes, as this would render them ineffective and can cause more rapid engine corrosion.

External anode location on lower unit

3.12 Checking top cowling

Check the fitting of the top cowling by pushing it with both hands. If it is loose have it repaired by your dealer.

Top cowling fitting check by pushing with both hands

3.13 Maintenance Table

When utilized under normal condition, maintained and repaired in the proper manner, the motor can work normally within the normal life period. The normal life of the engine is 350 hours or 10 years, whichever occurs first.

Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines.

The "•" symbol indicates the check-ups which you may carry out by yourself.

The "O" symbol indicates work to be carried out by your dealer.

ItemWork to be carried out byInitialEvery
ItemOperations10 hours
(1 month)
50 hours
( 3 months )
100 hours
(6 months)
200
hours
(1 year)
Anode(s) (external)Check/replacement●/○●/○
Anode(s) (internal)Check/replacement
Cooling water passagesCleaning
Cowling clampCheck
Fuel filter (disposable)Check/cleaning
Fuel systemCheck
Fuel tank (portable tank)Check/cleaning
Gear oilChange
Greasing pointsGreasing
Idling speed (carburetor model)Check/adjustment●/○●/○
Propeller and cotter pinCheck/replacement
Shift link/shift cableCheck/adjustment

| Thermostat | Check | | | | ○ | | Throttle link & cable / Throttle pick-up timing | Check/adjustment | | | | ○ | | Water pump | Check | | | | ○ | | Engine oil | Check/replacement | ● | | ● | | | Oil filter | Change | | | | ○ | | Spark plug (s) | Cleaning/adjustment /replacement | ● | | | ● | | Timing belt | Check/replacement | | | ○ | ○ | | Valve clearance | Check/adjustment | ○ | | ○ | |

NOTE:

When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after every use.

4. Transporting and storing

4.1 Transporting

The outboard motor should be trailed and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the outboard motor in the tilt position using a motor support device.

CAUTION:

Do not use the tilt support lever or knob when trailing the boat. The outboard motor could shake loose from the tilt support and fall.

Outboard motor trailering in tilt position

  • Never get under the lower unit while it is tilted, even if a motor support bar is used.
  • When transporting or storing the outboard motor while removed from a boat, keep the outboard motor in the attitude shown.

Please refer the following illustration to place the outboard motor when transportation.

Outboard motor upright transport position

Outboard motor horizontal transport position

Outboard motor cushioned side transport position

Outboard motor protected transport position with towel

CAUTION:

Place a towel or something similar under the outboard motor to protect it from damage.

Do not place the outboard motor on its side (not upright) before drain the engine oil completely, otherwise the oil would enter the cylinder and cause engine trouble.

4.2 Storing

When store your outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive damage.

It is advisable to have your outboard motor serviced by an authorized dealer prior to storage. However, you, the owner, with a minimum of tools, can perform the following procedures.

CAUTION:

Keep the outboard motor in an upright attitude when transporting and storing it. If storing or transporting the outboard motor on its side (not upright), put it on a cushion after draining the engine oil completely.

Do not place the outboard motor on its side before the cooling water has drained from it completely.

Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

    1. Wash the outboard motor body using fresh water.
    1. Disconnect the fuel line and tighten the air vent screw.
    1. Remove the engine top cowling and silencer cover
    1. Install the outboard motor on the test tank.
    1. Lowest water level
    1. Water surface
  • 3.Anti-cavitation plate

Outboard motor installed in test tank for flushing

  1. Fill the tank with fresh water to above the level of the anti-cavitation plate.

CAUTION:

If the fresh water level is below the level of the anti-cavitation plate, or if the water supply Is insufficient, engine seizure may occur.

  1. Start the engine. Flush the cooling system. Perform the flushing and fogging at the same time, as fogging/lubricating of the engine is mandatory to prevent engine rust.

WARNING:

  • Do not touch or remove electrical parts when starting or during the operation.
  • Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.
    1. Run the engine at a fast idle for a few minutes in neutral position.
    1. Before turning off the engine, quickly spray "Fogging Oil" into the carburetor or the fogging hole of the silencer cover, if equipped.
    1. If "Fogging Oil" is not available, run the engine at a speed higher than idle until the fuel in the fuel

system has run out and the engine stops. Remove the spark plug(s). Pour a teaspoonful of clean engine oil into each cylinder. Rotate the flywheel several times by hand. Replace the spark plug(s).

  1. Drain the fuel from the fuel tank and drain cooling water from the engine completely. Clean the outboard motor body.

CAUTION:

Store the fuel tank in a dry, well-ventilated place, not in direct sunlight.

4.3 Flusher

Perform this procedure right after operation for thorough flushing.

CAUTION:

Do not perform this procedure while the engine is running. The water pump may be damaged from overheat, or serious damage can occur

  1. After stopping the engine, remove the water pipe connector from the water pipe plug.

Water pipe plug and connector for flushing

  1. Water pipe plug; 2. Water pipe connector
    1. Connect the water pipe connector to a rubber hose connecting to clean fresh water, and turn on the tap.
    1. Flush the fresh water through the cooling passage for about 15 minutes. Turn off the water and remove the water pipe connector.
    1. Install the water pipe connector onto the water pipe plug after flushing. Tighten the nut.

WARNING:

Do not leave the water pipe connector loose on the bottom cowling water pipe plug or let the pipe hang free during normal operation. Water will leak out of the connector instead of cooling the engine, which can cause serious overheating. Be sure the connector is tightened securely on the pipe plug after flushing the engine.

5. Actions in emergency

5.1 Impact damage

If the outboard motor hits an object in the water, follow the procedure below:

    1. Stop the engine immediately.
    1. Inspect the control system and all components for damage.
    1. Whether damage is found or not, return to the nearest harbor slowly and carefully.
    1. Have a dealer inspect the outboard motor before operating it again.

5.2 Starter will not operate

If the starter mechanism does not operate, the engine can be started with an emergency starter rope.

WARNING:

Use this procedure only in an emergency and only to return to port for repairs.

When the emergency starter rope is used to start the engine, the start-in-gear protection device does not operate. Make sure the gear shift lever is in neutral.

Be sure no one is standing behind you when pulling the starter rope. It could whip behind you and injure someone.

Do not install the starter mechanism or top cowling after engine is running. Keep loose clothing and other objects away when starting the engine. Do not touch the flywheel or other moving parts when the engine is running.

Do not touch the ignition coil, spark plug wire, spark plug cap, or other electrical components when starting or operating the motor.

Procedure is as follows:

    1. Remove the top cowling.
    1. Remove the belt cover and start-in-gear protection cable.

Belt cover and start-in-gear protection cable removal

  1. Belt cover 2.Start-in-gear protection cable
  2. Remove the starter cover after removing the three bolts. Disconnect the leads for the warning indicator

Starter cover removed after three bolts disconnected

  1. Prepare the engine for starting. For further information, see section 2.5.
    1. Insert the knotted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope several turns around the flywheel clockwise.
    1. Pull the rope slowly until resistance is felt.

Emergency starter rope wound around flywheel rotor

7.Give a strong pull straight out to crank and start the engine. Repeat it necessary.

5.3 Treatment of submerged motor

If the outboard is submerged, immediately take it to your dealer. Otherwise some corrosion may begin almost immediately. If you are unable to take the outboard to your dealer immediately, perform the following procedures to reduce damage:

    1. Thoroughly wash away contaminants with fresh water.
    1. Remove the spark plug(s), and then face the spark plug hole downward to allow any mud, or contaminants to drain.
    1. Drain the fuel from the carburetor, fuel filter, and fuel line. Drain the engine oil completely.
    1. Fill the sump with fresh engine oil.
    1. Feed engine fogging oil or engine oil through the carburetor(s) and spark plug holes while starting the engine.
    1. Take the outboard motor to a PARSUN dealer as soon as possible.

CAUTION:

Do not attempt to run the outboard motor until it has been completely inspected.

6. Troubleshooting

Trouble typePossible reasonRecovery action
Starter will not operateStarter components are faultyHave serviced by your dealer
Starter will not operateShift lever is not in neutralShift to neutral
Engine will not start (starter operates)Fuel tank is emptyFill tank with clean, fresh fuel
Engine will not start (starter operates)Fuel is contaminated or staleFill tank with clean, fresh fuel
Engine will not start (starter operates)Fuel filter cloggedClean or replace with recommended type
Engine will not start (starter operates)Fuel pump has malfunctionedHave serviced by your dealer
Engine will not start (starter operates)Spark plug(s) fouled or of incorrect typeInspect spark plug(s). Clean or replace with recommended type
Engine will not start (starter operates)Spark plug cap(s) fitted incorrectlyCheck and re-fit cap(s)
Engine will not start (starter operates)Ignition wiring damaged or poorly connectedCheck wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires
Engine will not start (starter operates)Ignition parts are faultyHave serviced by your dealer
Engine will not start (starter operates)Engine stop switch lanyard is not attachedAttach lanyard
Engine will not start (starter operates)Engine inner parts are damagedHave serviced by your dealer
Engine idles irregularly or stallsSpark plug(s) fouled or of incorrect typeInspect spark plug(s). Clean or replace with recommended type
Engine idles irregularly or stallsFuel system is obstructedCheck for pinched or kinked fuel line or other obstructions in fuel system
Engine idles irregularly or stallsFuel is contaminated or staleFill tank with clean, fresh fuel
Engine idles irregularly or stallsFuel filter cloggedClean or replace with recommended type
Engine idles irregularly or stallsSpark plug gap is incorrectInspect and adjust as specified
Engine idles irregularly or stallsIgnition wiring damaged or poorly connectedCheck wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires
Engine idles irregularly or stallsSpecified engine oil is not being usedCheck and replace oil as specified
Engine idles irregularly or stallsThermostat is faulty or cloggedHave serviced by your dealer
Engine idles irregularly or stallsCarburetor adjustments are incorrectHave serviced by your dealer
Engine idles irregularly or stallsCarburetor is cloggedHave serviced by your dealer
Engine idles irregularly or stallsFuel pump is damagedHave serviced by your dealer
Engine idles irregularly or stallsAir vent screw on fuel tank is closedOpen air vent screw
Engine idles irregularly or stallsFuel joint connection is incorrectConnect correctly
Engine idles irregularly or stallsThrottle valve adjustment is incorrectHave serviced by your dealer
Engine idles irregularly or stallsChoke knob is pulled outReturn to home position
Engine idles irregularly or stallsMotor angle is too highReturn to normal operating position
Engine power lossPropeller is damagedRepair or replace propeller
Engine power lossTrim angle is incorrectAdjust trim angle to achieve most efficient operation
Engine power lossMotor is mounted at incorrect transom heightAdjust motor to proper transom height
Engine power lossBoat bottom is fouled with marine growthClean boat bottom
Engine power lossWeeds or other foreign matter are tangled on gear housingRemove foreign matter and clean lower unit
Engine power lossSpark plug(s) are fouled or incorrect typeInspect spark plug(s). Clean or replace with recommended type
Engine power lossFuel system is obstructedCheck for pinched or kinked fuel line or other obstructions in fuel system
Engine power lossFuel filter is cloggedClean or replace with recommended type
Engine power lossFuel is contaminated or staleFill tank with clean, fresh fuel
Engine power lossSpark plug gap is incorrectInspect and adjust as specified
Engine power lossIgnition wiring is damaged or poorly connectedCheck wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires
Engine power lossIgnition parts have failedHave serviced by your dealer
Engine power lossSpecified engine oil is not being usedCheck and replace oil as specified
Engine power lossThermostat is faulty or cloggedHave serviced by your dealer
Engine power lossAir vent screw on fuel tank is closedOpen air vent screw
Engine power lossFuel pump has malfunctionedHave serviced by your dealer
Engine power lossFuel joint connection is incorrectConnect correctly
Engine power lossSpecified spark plug(s) are not being usedCheck and replace spark plug(s) as specified
Engine vibrates excessivelyPropeller is damagedRepair or replace propeller
Engine vibrates excessivelyPropeller shaft is damagedHave serviced by your dealer
Engine vibrates excessivelyWeeds or other foreign matter are tangled on propellerRemove and clean propeller
Engine vibrates excessivelyMotor mounting bolt is looseTighten the bolt
Engine vibrates excessivelySteering pivot is looseTighten the steering pivot
Engine vibrates excessivelySteering pivot is damagedHave serviced by your dealer

7. Circuit diagram

F15A/F20ABM

Circuit diagram for F15A F20A BM model

    1. C.D.I. unit
    1. Charge coil
    1. Magneto coil
    1. Lighting coil
    1. Impulse coil
    1. Solenoid valve
    1. Ignition coil
    1. Spark plug
    1. Temperature switch
    1. Oil pressure switch
    1. Engine stop switch
    1. Warning lamp

F15A/F20ABW

Circuit diagram for F15A F20A BW model

    1. C.D.I. unit
    1. Charge coil
    1. Magneto coil
    1. Lighting coil
    1. Impulse coil
    1. Solenoid valve
    1. Rectifier
    1. Fuse
    1. Starter motor
    1. Starter relay
    1. Battery
    1. Ignition coil
    1. Spark plug
    1. Temperature switch
    1. Oil pressure switch
    1. Neutral switch
    1. Engine start switch
    1. Engine stop switch
    1. Warning lamp
    1. Trim & tilt motor (For electric tilt model)
    1. Wiring terminal (For electric tilt model)
    1. Trim & tilt relay (For electric tilt model)
    1. Trim & tilt switch (For electric tilt model)

F15A/F20AFW

Circuit diagram for F15A F20A FW model

    1. C.D.I. unit
    1. Charge coil
    1. Magneto coil
    1. Lighting coil
    1. Impulse coil
    1. Solenoid valve
    1. Rectifier
    1. Fuse
    1. Starter motor
    1. Starter relay
    1. Battery
    1. Ignition coil
    1. Spark plug
    1. Temperature switch
    1. Oil pressure switch
    1. Warning lamp
    1. Trim & tilt motor (For electric tilt model)
    1. Wiring terminal (For electric tilt model)
    1. Trim & tilt relay (For electric tilt model)
    1. Trim & tilt switch (For electric tilt model)

F15EFI/F20EFI BM

Circuit diagram for F15EFI F20EFI BM model

  1. Spark plug 2. Ignition coil 3. Fuel injection coil 4. Fuel pump relay 5. Impulse coil 6. Lighting coil 7. E.C.U. unit 8. Oil pressure protector 9. Alarm indication lamp 10. Water temperature sensor 11. Engine stop switch 12. Rectifier 13. Fuse 14. Electric fuel pump 15. Intake temperature/pressure sensor 16. Throttle position sensor 17. Electrolytic capacitor Gr: grey Lg: pale green Pu: purple O: orange Y: yellow R: red P: pink B: black G: green W: white L: blue Br: brown G/W: green/white B/W: black/white Br/L: brown/blue Y/B: yellow/black P/B: pink/black Y/R: yellow/red P/W: pink/white G/W: green/white L/W: blue/white R/W: red/white B/R: black/red Y/G: yellow/green

F15EFI/F20EFI BW

Circuit diagram for F15EFI F20EFI BW model

  1. Spark plug 2. Ignition coil
  2. Fuel injection coil
  3. Fuel pump relay
  4. Impulse coil
  5. Lighting coil
  6. E.C.U. unit
  7. Oil pressure protector
  8. Alarm indication lamp
  9. Water temperature sensor
  10. Engine stop switch
  11. Rectifier
  12. Fuse
  13. Electric fuel pump
  14. Intake temperature/pressure sensor
  15. Throttle position sensor
  16. Battery
  17. Starter motor
  18. Starter relay
  19. Neutral switch
  20. Starter switch

Gr: grey

Lg: pale green

Pu: purple O: orange

Y: yellow

R: red

P: pink B: black

G: green W: white

L: blue

Br: brown G/W: green/white

B/W: black/white

Br/L: brown/blue

Y/B: yellow/black

P/B: pink/black

Y/R: yellow/red

P/W: pink/white

G/W: green/white

L/W: blue/white R/W: red/white

B/R: black/red

Y/G: yellow/green

69

F15EFI/F20EFI FW

Circuit diagram for F15EFI F20EFI FW model

  1. Spark plug 2. Ignition coil 3. Fuel injection coil 4. Fuel pump relay 5. Impulse coil 6. Lighting coil 7. E.C.U. unit Gr: grey Lg: pale green Pu: purple O: orange Y: yellow R: red P: pink Y/R: yellow/red P/W: pink/white G/W: green/white L/W: blue/white R/W: red/white B/R: black/red Y/G: yellow/green
  2. Oil pressure protector 9. Alarm indication lamp 10. Water temperature sensor 11. Engine stop switch 12. Rectifier B: black G: green W: white L: blue Br: brown
  3. Fuse 14. Electric fuel pump 15. Intake temperature/pressure sensor 16. Throttle position sensor 17. Battery G/W: green/white B/W: black/white Br/L: brown/blue Y/B: yellow/black P/B: pink/black
  4. Starter motor 19. Starter relay

Remote Control Box

Circuit diagram for remote control box