Parsun F5BM User manual

OUTBOARD MOTOR
OWNER’S MANUAL
F4BM (F5BM)
SUZHOU PARSUN POWER MACHINE CO., LTD

Thank you for owning a PARSUN outboard motor.
Thank you for your trust in our company and products.
z“PARSUN” outboard motors are powerful, economic and safe, manufactured with
advanced technology.
Please read this manual carefully before operating your outboard motor. A through
understanding of the manual will help you to know this product for proper operation,
maintenance and care. This will ensure that your outboard motor operates well under
all conditions.
z“PARSUN” seeks continuous improvement in product quality. Therefore, while this
manual contains the most current product information available at the time of printing,
there may be minor discrepancies between your machine and this manual. If there is
any question concerning the manual, please consult your local PARSUN dealer.
zData, illustrations or explanations in this Owner’s Manual do not constitute base for
any legal claim against our company.
SUZHOU PARSUN POWER MACHINE CO., LTD

Engine Identification Numbers
Outboard motor serial number
The outboard motor serial number is marked on the label. The label can be found on the bracket left
assembly or on the upper part of the bracket swivel.
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
Serial number as follows: SN
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Engine serial number
The engine serial number is carved on the aluminum casting of engine.
Engine serial number as follows:
Manufacturer’s Declaration
This outboard motor complies with the requirements of Directive 2003/44/EC in relation to the exhaust
and noise emissions. The following installation and maintenance instructions, if applied, guarantee that the
outboard motor will remain in compliance with:
1. Exhaust emissions limits throughout the normal life or the engine (350 hours or 10 years, whichever
occurs first) and under normal conditions of use.
2. Noise emissions limits under normal conditions of use.

Table of contents
1. Main components and General information……………………………………………………………1
1.1. Main components………………………………………………………………………………………1
1.2. General information……………………………………………………………………………………3
1.2.1. Specifications………………………………………………………………………………………3
1.2.2. Fueling instructions ………………………………………………………………………………4
1.2.3. Propeller selection…………………………………………………………………………………5
2. Operation…………………………………………………………………………………………………6
2.1. Installation………………………………………………………………………………………………6
2.1.1 Mounting height……………………………………………………………………………………7
2.1.2 Clamping the outboard motor……………………………………………………………………8
2.2 Breaking in engine ……………………………………………………………………………………9
2.3 Pre-operation checks…………………………………………………………………………………10
2.4 Filling fuel………………………………………………………………………………………………11
2.5 Starting engine ………………………………………………………………………………………13
2.6 Warming up engine …………………………………………………………………………………17
2.7 Shifting…………………………………………………………………………………………………18
2.7.1. Forward……………………………………………………………………………………………18
2.7.2. Reverse……………………………………………………………………………………………19
2.8. Tiller ……………………………………………………………………………………………………20
2.9. Stopping engine ………………………………………………………………………………………22
2.10 Trimming outboard motor …………………………………………………………………………24

2.11.1. Tilting up …………………………………………………………………………………………25
2.11.2. Tilting down ……………………………………………………………………………………27
2.12 Cruising in other conditions ………………………………………………………………………29
2.12.1. Cruising in shallow water ………………………………………………………………………29
2.12.2. Cruising in salt water……………………………………………………………………………29
3. Maintenance……………………………………………………………………………………………30
3.1. Greasing ……………………………………………………………………………………………30
3.2. Cleaning and adjusting spark plug ………………………………………………………………31
3.3. Checking fuel system………………………………………………………………………………31
3.4. Inspecting idling speed ……………………………………………………………………………32
3.5. Changing engine oil…………………………………………………………………………………33
3.6. Checking wiring and connectors …………………………………………………………………34
3.7. Checking for leakage………………………………………………………………………………34
3.8. Checking propeller…………………………………………………………………………………35
3.8.1. Removing the propeller …………………………………………………………………………36
3.8.2. Installing the propeller …………………………………………………………………………36
3.9. Changing gear oil …………………………………………………………………………………37
3.10. Cleaning fuel tank…………………………………………………………………………………38
3.11. Checking and replacing anode(s) ………………………………………………………………39
3.12. Checking top cowling ……………………………………………………………………………40
3.13. Maintenance table…………………………………………………………………………………40

4. Transporting and storing outboard motor……………………………………………………………43
4.1. Transporting …………………………………………………………………………………………43
4.2. Storing………………………………………………………………………………………………44
5. Action in emergency …………………………………………………………………………………52
5.1. Impact damage ……………………………………………………………………………………47
5.2. Starter will not operate ……………………………………………………………………………52
5.3. Treatment of submerged motor …………………………………………………………………55
6. Troubleshooting ………………………………………………………………………………………57
7. Circuit diagram ………………………………………………………………………………………57

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1. Main components and General information
1.1 Main components
1. Top cowling 8. Clamp bracket 14. Carrying handle 21. Fuel tank*
2. Top cowling lock handle 9. Tiller handle 15. Clamp screw
3. Steering friction screw 10. Engine stop button/ 16. Rope attachment
4. Anti-cavitation plate Engine stop lanyard switch 17. Tilt support bar
5. Propeller 11. Starter handle 18. Fuel joint
6. Cooling water inlet 12. Throttle friction adjuste
r
19. Choke knob
7. Trim rod 13. Throttle grip 20. Gear shift lever
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Note:
* The fuel tank is
equipped for
the proper
model.

If your model includes a portable fuel tank, its parts are as follows:
1. Fuel tank cap 3. Air vent screw
2. Fuel joint 4. Fuel gauge
If your model includes a built-in fuel tank, its parts are as follows:
1. Air vent screw 3. Built-in fuel tank
2. Fuel tank cap 4. Fuel cock (closeposition)
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2 4
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3 4

WARNING
zThe 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.
zThe fuel cock must be at close position while using portable fuel tank.
zDisconnect the fuel joint while using the built-in fuel tank.
1.2 General information
1.2.1 Specifications
Parameter
Items Data Items Data
Type of engine 4-stroke S Weight (L) 25.5Kg
Displacement 112cm3Recommended fuel Unleaded regular gasoline
Bore X stroke 59mm×41mm Built-in fuel tank capacity 1.3L
Gear ratio 2.08（27/13）Recommended engine oil SAE10W30 orSAE10W40
Overall length 717mm Engine oil quantity 0.5L
Overall width 361mm Recommended gear oil Hypoid gear oil SAE﹟90
Overall height (S) 1029mm Gear oil quantity 100cm3
Overall height (L) 1156mm Spark plug BR6HS
Weight (S) 24.5Kg Spark plug gap 0.6～0.7mm
3

Performance
Items Data Items Data
Maximum output 2.9Kw/4500Rpm(4HP) Valve clearance IN
(cold engine) 0.08～0.12mm
3.6Kw/5000Rpm(5HP) Valve clearance EX
(cold engine) 0.08～0.12mm
Full throttle operating range 4000～5000Rpm Tightening
torque for
engine
Spark plug 25.0Nm
Idling speed (in neutral) 1500±50Rpm Engine oil
drain bolt 20.0Nm
1.2.2 Fueling instructions
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:
zDo not smoke when refueling, and keep away from sparks, flames, or other sources of
ignition.
zStop engine before refueling.
zRefuel in a well-ventilated area. Refuel portable fuel tanks off the boat.
zDo not overfill the fuel tank.
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zTake care not to spill gasoline, if gasoline spills, wipe it up immediately.
zTighten the filler cap securely after refueling.
zIf you should swallow some gasoline, inhale gasoline vapor, or get gasoline in your eye,
get immediate medical attention.
zIf any gasoline spills onto your skin, immediately wash with soap and water. Change clothing
if gasoline spills on it.
zTouch 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 (0.5L).
WARNING:
zDo not start the engine when the oil level is low. Serious damage might occur.
zAlways 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 propeller 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. “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.
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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.
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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:
zOverpowering 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.
zImproper mounting of the outboard motor could result in dangerous conditions and injury.
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. For portable models, your dealer or other person experienced in
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0～25mm
(0-1in)
outboard motor mounting should show you how to mount your motor.
zThe 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.
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.
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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.
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.
2. 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.
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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.
2.2 Breaking in engine
Your new engine requires a period of break-in 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.
2.For the second hour of operation:
Run the engine at 3000 r/min or at approximately three-quarter throttle.
3.For the next eight hours of operation:
Avoid continuous operation at full throttle for more than five minutes at a time.
4.Operate the engine normally.
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2.3 Pre-operation checks
Fuel
zCheck to be sure you have plenty of fuel for your trip.
zMake sure there are no fuel leaks or gasoline fumes.
zCheck fuel line connections to be sure they are tight.
zBe 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
zCheck throttle, shift and steering for proper operation before starting the engine.
zThe controls should work smoothly, without binding or unusual free play.
zLook for loose or damaged connections.
zCheck operation of the starter and stop switches when the outboard motor is in the water.
CAUTION:
zDo not start the engine out of water. Overheating and serious engine damage can occur.
zCheck the engine and engine mounting.
zLook for loose or damaged fasteners.
zCheck the propeller for damage.
Checking the engine oil level
1. Put the outboard motor in an upright position (not tilted).
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2. 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.
1. Oil cap
2. Oil dipstick 3. Upper level mark 4. 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.
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2. Carefully fill the fuel tank.
3. Securely close the cap after filling the tank. Wipe up any spilled fuel.
NOTE:
The upper fuel level mark is indicated on the built-in fuel tank.
1. Upper level mark
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2.5 Starting engine
1. Loosen the air vent screw on the fuel tank cap.
One turn for built-in tank; 2 or 3 turns for the external fuel tank.
2. Open the fuel cock.
Built in fuel tank External fuel tank
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