Parsun T40BM Owner's Manual
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Parsun T40BM Owner's Manual

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OUTBOARD MOTOR
OWNER'S MANUAL
T40/30BM
T40/30BW
T40/30FW
SUZHOU PARSUN POWER MACHINE CO., LTD.

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Summary of Contents for Parsun T40BM

  • Page 1 OUTBOARD MOTOR OWNER’S MANUAL T40/30BM T40/30BW T40/30FW SUZHOU PARSUN POWER MACHINE CO., LTD.
  • Page 2 Thank you for owning a PARSUN outboard motor. Thank you for your trust in our company and products.  “PARSUN” outboard motors are powerful, economic and safe with advanced technology and processing technique.  Please read this manual carefully before operating your outboard motor. A thorough understanding of the manual will help you to know this product for proper operation, maintenance and care.
  • Page 3 Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Parsun dealer, or for reference in case your outboard motor is stolen. 1. Outboard motor serial number location...
  • Page 4 Engine serial number The engine serial number is carved on the aluminum casting of engine. Serial number as follows:...

  • Page 5: Table Of Contents

    Table of contents 1. Main components and General information · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·1 1.1 Main components ·...
  • Page 6 3. Maintenance · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·36 3.1 Greasing ·...

  • Page 7: Main Components And General Information

    1. Main components and General information 1.1 Main components 14. Throttle grip 1. Top cowling 8. Clamp bracket 2. Top cowling lock handle 9. Steering friction adjuster 15. Throttle friction adjuster 10. Tiller handle 16. Clamp screw 3. Anode 4. Anti-cavitation plate 11.
  • Page 8 If your model includes a portable fuel tank, its parts are as follows: Fuel tank cap 3. Air vent screw 2. Fuel joint 4. Fuel gauge WARNING The fuel tank supplied with this engine could only be used as supply of fuel for its running and must not be as a fuel storage container.
  • Page 9 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.

  • Page 10: General Information

    1. Fully open 2. Fully closed 1.2 General information 1.2.1 Specifications Parameter Items Data Items Data Type of engine 2-stroke L Weight L (BM/W) 75.1kg/77.7kg Displacement 703cm Transom S (BM/W) 426mm Bore X stroke 80mm×70mm Transom L (BM/W) 553mm Gear ratio 2.00（26/13）...

  • Page 11: Fueling Instructions

    Performance Items Data Items Data (40HP) 29.4kw/5000 rpm Idling speed (in neutral) 1000±50 rpm Maximum output (30HP) 22kw/5000 rpm Spark plug 25.0Nm Tightening torque Full throttle for engine 4500～5500 rpm Propeller nut 17.0Nm operating range 1.2.2 Fueling instructions Fueling instructions: Recommended gasoline: Regular unleaded gasoline, If it is not available, then premium gasoline.

  • Page 12: Propeller Selection

    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.
  • Page 13 “PARSUN” dealers stock a range of propellers and can advise you and install a propeller on your outboard 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.

  • Page 14: Operation

    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 dealer. 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.

  • Page 15: Mounting Height

    Improper mounting of the outboard motor could result in hazardous conditions.  For permanently mounted models, 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.

  • Page 16: Clamping The Outboard Motor

    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.

  • Page 17: Breaking In Engine

    3. Secure the clamp bracket to the transom using the appropriate bolts. For details, consult your PARSUN dealer. WARNING: Avoid using bolts, nuts or washers inappropriate. After tightening, test running the engine and check their tightness.

  • Page 18: Pre-Operation Checks

    CAUTION: Failure to follow the break-in procedure could result in reduced engine life or even severe engine damage. 1. First 10 minutes: Run the engine at idle. 2. Next 50 minutes: Run the engine at 3000 r/min or at approximately half throttle. 3.

  • Page 19: Filling Fuel

    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. ...

  • Page 20: Starting Engine

    2. Carefully fill the fuel tank. 3. Securely close the cap after filling the tank. Wipe up any spilled fuel. 2.5 Starting engine For T40/30BM 1. Loosen the air vent screw on the fuel tank cap, 2 or 3 turns. 2.
  • Page 21 WARNING: The engine must be started in neutral otherwise damage to the starter can occur.  Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it  could become entangled, preventing it from functioning. Avoid accidentally pulling the lanyard during normal operation.
  • Page 22 5. Pull out the choke knob fully. NOTE: It is not necessary to use the choke when starting a warm engine.  If the choke is left in the “START” (start) position while the engine is running, the engine will run ...
  • Page 23 8. 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 ...
  • Page 24 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 forwar NOTE: The start-in-gear protection device prevents the engine from starting except when in neutral.
  • Page 25 6．After the engine starts, slowly return the manual starter handle to its original position before releasing it. Immediately after the engine starts,release the main switch and allow it to return to “ON”(on). 7．Slowly return the throttle grip to the fully closed position. NOTE: Never turn the main switch to “START”(start)while the engine is running.
  • Page 26 2. Attach the engine stop switch lanyard to a 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: Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. ...
  • Page 27 5. Press in and hold the main switch to operate the remote choke system. The remote chock switch automatically returns to its normal position when ou release your hand. Therefore keep the switch pressed in. NOTE: It is not necessary to use the choke when starting a warm engine. ...

  • Page 28: Warming Up Engine

    NOTE: When the engine is cold, it needs to be warmed up. 2.6 Warming up engine 1. After starting the engine, allow it to idle for 3 minutes to warm up. Failure to do so will shorten engine life. Gradually return the choke knob to its home position as the engine warms up. Check for steady flow of water from the cooling water pilot hole.

  • Page 29: Forward

    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. 2. Move gear shift lever quickly and firmly from neutral to forward.

  • Page 30: Reverse

    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. 2.

  • Page 31: Tiller

    For T40/30FW 1. Check that the tilt lock lever is in the lock position. 2. Pull up the neutral interlock rigger and move the remote control lever quickly and firmly from neutral to reverse. 2.8 Tiller 1. Change direction To change direction, move the tiller handle to the left or right as necessary.
  • Page 32 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. 1.Throttle indicator 4.

  • Page 33: Stopping Engine

    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. PROCEDURE: Push and hold the engine stop button until the engine comes to a complete stop. NOTE: If the outboard motor is equipped with an engine stop switch lanyard, the engine can also be stopped by pulling...
  • Page 34 For T40/30FW 1. Turn the main switch to “OFF” (off). 2. Tighten the air vent screw on the fuel tank cap. 3. Disconnect the fuel line.

  • Page 35: Trimming Outboard Motor

    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. 2. Remove the trim rod from the clamp bracket while slightly tilting the outboard motor up.

  • Page 36: Tilting

    Tighten the air vent screw and place the fuel cock in the closed position if the outboard motor  will be tilted for more than a few minutes. Otherwise fuel may leak. NOTE: Do not tilt up the engine by pushing the tiller handle because this could break the handle. ...
  • Page 37 3. Tighten the air vent screw. Disconnect the fuel joint from the outboard motor. 4. Place the tilt lock lever (if equipped) in the up position. 5. Hold the rear handle and tilt the engine up fully until the tilt support lever automatically locks.
  • Page 38 For T40/30FW 1. Place the remoter control lever in neutral (if equipped). 2. Disconnect the fuel line from the outboard motor. 3. Place the tilt lock lever (if equipped) in the up position.

  • Page 39: Tilting Down

    4. Hold the rear handle and tilt the engine up fully until the tilt support lever automatically locks. 2.11.2 Tilting down 1. Slightly tilt the outboard motor up. 2. Slowly tilt the outboard motor down while pulling the tilt support bar lever up.

  • Page 40: Cruising In Other Conditions

    3. Loose the steering friction adjuster by turning it counterclockwise, and adjust the steering friction according to operator preference. WARNING: If there is too much resistance it could be difficult to steer, which could result in an accident. For T40/30FW 1.

  • Page 41: Cruising In Salt Water

    used. Run the boat at the lowest possible speed to avoid the outboard motor being lifted out of the water, resulting in loss of control. Return the outboard motor to its normal position as soon as the boat is back in deeper water. ...

  • Page 42: Maintenance

    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 PARSUN dealer or other qualified mechanic. CAUTION: If replacement parts are necessary, use only genuine PARSUN parts or parts of the same type and of equivalent strength and materials.

  • Page 43: Cleaning And Adjusting Spark Plug

    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 PARSUN dealer or other qualified mechanic should repair it immediately.

  • Page 44: Cleaning The Fuel Filter

    2. Check the fuel filter periodically. If foreign matter is found in the filter, clean it. 3.3.1 Cleaning the fuel filter 1. Removing the nut holding the fuels filter assembly if equipped. 2. Unscrew the filter cup, catching any spilled fuel in a rag. 3.

  • Page 45: Inspecting Idling Speed

    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 a PARSUN dealer or other qualified mechanic.

  • Page 46: Checking Wiring And Connectors

    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 PARSUN dealer. 3.7 Checking propeller WARNING: Before inspecting, removing or installing the ...
  • Page 47 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. 1. Check each of the propeller blades for wear, erosion from cavitation or ventilation, or other damage. 2.

  • Page 48: Removing The Propeller

    3.7.1 Removing the propeller 1. Straighten the cotter pin and pull it out using a pair of pliers. 2. Remove the propeller nut, washer, and spacer (if equipped). 3. Remove the propeller and thrust washer. 1. Cotter pin 2. Propeller nut 3.

  • Page 49: Changing Gear Oil

    3. Install the spacer (if equipped) and the washer. 4. 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. 3.8 Changing gear oil WARNING: Be sure the outboard motor is securely fastened to the transom or a stable stand.

  • Page 50: Cleaning Fuel Tank

    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 PARSUN dealer. 5. Use a flexible or pressurized filling device, and inject the gear oil into the gear oil drain screw hole.

  • Page 51: Checking And Replacing Anode

    3.10 Checking and replacing anode(s) Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a PARSUN dealer for replacement of external anodes. CAUTION: Do not paint anodes, as this would render them ineffective and can cause more rapid engine...

  • Page 52: Checking Top Cowling

    3.11 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 PARSUN dealer.

  • Page 53: Maintenance Table

    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 “○” symbol indicates work to be carried out by your Parsun dealer. Initial Every...
  • Page 54 Continuation /…1 Initial Every Item Operations 10 hours 50 hours 100 hours 200 hours (1 month) (3 months) (6 months) (1 year) Idling speed (carburetor Check/adjustment ●/○ ●/○ models) Propeller and cotter pin Check/replacement ● ● Shift link/shift cable Check/adjustment ○...

  • Page 55: Transporting And Storing Outboard Motor

    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.

  • Page 56: Storing

    It is advisable to have your outboard motor serviced by an authorized PARSUN dealer prior to storage. However, you, the owner, with a minimum of tools, can perform the following procedures.
  • Page 57 5. 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. 6.
  • Page 58 11. Drain the fuel from the fuel tank completely. CAUTION: Portable fuel tank equipped models: Store the portable fuel tank in a dry, well-ventilated place, not in direct sunlight.

  • Page 59: Action In Emergency

    2. Inspect the control system and all components for damage. 3. Whether damage is found or not, return to the nearest harbor slowly and carefully. 4. Have a PARSUN 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.
  • Page 60 The procedure is as follows: 1. Remove the top cowling. 2. Remove the start-in-gear protection cable. 1. Start-in-gear protection cable 3. Remove the starter cover after removing the three bolts. 4. Prepare the engine for starting. For further information, see section 2.5. 5.

  • Page 61: Treatment Of Submerged Motor

    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 a PARSUN dealer.Otherwise some corrosion may begin almost immediately. 1. Thoroughly wash away contaminants with fresh water.
  • Page 62 5. 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.

  • Page 63: Troubleshooting

    6. Troubleshooting Trouble type Possible reason Recovery action Starter components are faulty Have serviced by your dealer Starter will not operate Shift lever is not in neutral Shift to neutral Fuel tank is empty Fill tank with clean, fresh fuel Fuel is contaminated or stale Fill tank with clean, fresh fuel Clean or replace with recommended...
  • Page 64 Continuation /…1 Trouble type Possible reason Recovery action Check for pinched or kinked fuel Fuel system is obstructed line or other obstructions in fuel system Fuel is contaminated or stale Fill tank with clean, fresh fuel Clean or replace with Fuel filter clogged recommended type Spark plug gap is incorrect...
  • Page 65 Continuation /…2 Trouble type Possible reason Recovery action Propeller is damaged Repair or replace propeller Adjust trim angle to achieve most efficient Trim angle is incorrect operation Motor is mounted at incorrect transom height Adjust motor to proper transom height Boat bottom is fouled with marine growth Clean boat bottom Weeds or other foreign matter are tangled on...
  • Page 66 Continuation /…3 Trouble type Possible reason Recovery action Fuel joint connection is incorrect Connect correctly Engine power loss Check and replace spark plug(s) as Specified spark plug(s) are not being used specified Propeller is damaged Repair or replace propeller Propeller shaft is damaged Have serviced by your dealer Weeds or other foreign matter are tangled on Engine vibrates...

  • Page 67: Circuit Diagram

    7. Circuit diagram Spark plugs Ignition coil Engine stop switch Pulser coil black/orange black/white Charge coil T40/30BM red/white blue Thermo switch pink black Ignition control module（CDI） brown white DESCRIPTION...
  • Page 68 green black/orange black/white blue red/white black pink brown white Spark plugs Neutral switch (if equipped) Accumulator Choke solenoid Ignition coil Engine stop switch Starter relay T40/30W Pulser coil Starter motor Fuse holder Charge coil Thermo switch Rectifier Ignition control module（CDI） Lighting coil DESCRIPTION DESCRIPTION...
  • Page 69 Remote control Switch yellow Ignition yellow/red Engine stop switch red/white blue Buzzer green black brown DESCRIPTION white...

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