FX801V, FX751V
4 stroke air-cooled V-twin gasoline engine
OWNER’S MANUAL
SAFETY AWARENESS
Whenever you see the symbols shown below,
heed their instructions! Always follow safe operating
and maintenance practices.
DANGER
DANGER indicates a hazardous situation
which, if not avoided, will result in death or
serious injury.
WARNING
WARNING indicates a hazardous situation
which, if not avoided, could result in death
or serious injury.
NOTICE
NOTICE is used to address practices not
related to personal injury.
NOTE
○NOTE indicates information that may help or
guide you in the operation or service of the vehicle.
READ THIS FIRST
For your safety, read this Owner’s Manual and understand it thoroughly before operating this ENGINE.
DANGER
Exhaust gas contains carbon monoxide, a colorless, odorless poisonous gas. Inhaling carbon monoxide can cause
serious brain injury or death.
DO NOT run the engine in enclosed areas. Operate only in a well-ventilated area. Gasoline is extremely ammable
and can be explosive under certain conditions, creating the potential for serious burns. When refueling, servicing
fuel system, draining gasoline and/or adjusting the carburetor:
Stop engine and allow it to cool before refueling.
DO NOT smoke.
Make sure the area is well-ventilated and free from any source of ame or sparks, including the pilot light of any
appliance.
DO NOT ll the tank so the fuel level rises into the ller neck or level surface of level gauge. If the tank is overlled,
heat may cause the fuel to expand and overow through the vents in the tank cap.
Wipe off any spilled gasoline immediately.
Engines can become extremely hot during normal operation.
To prevent re hazard:
Keep the engine at least 1 m (3.3 ft) away from buildings, obstructions and other burnable objects.
DO NOT place ammable objects close to the engine.
DO NOT expose combustible materials to the engine exhaust.
DO NOT use the engine on any forest covered, brush covered or grass covered unimproved land unless spark
arrester is installed on the mufer.
To avoid getting an electric shock, DO NOT touch spark plugs, plug caps or spark plug leads during engine running.
To avoid a serious burn, DO NOT touch a hot engine or mufer. The engine becomes hot during operation. Before you
service or remove parts, stop engine and allow the engine to cool.
DO NOT place hands or feet near moving or rotating parts. Place a protective cover over pulley, V belt or coupling.
DO NOT run engine at excessive speeds. This may result in injury.
Always remove the spark plug caps from spark plugs when servicing the engine to prevent accidental starting.
Read warning labels which are on the engine and understand them. If any label is missing, damaged, or worn get a
replacement from your Kawasaki engine dealer and install it in the correct position.
EMISSION CONTROL INFORMATION
Fuel Information
THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED REGULAR GRADE GASOLINE ONLY. A
minimum of 87 octane of the antiknock index is recommended. The antiknock index is posted on service station
pumps in the U.S.A.
Emission Control Information
To protect the environment in which we all live, Kawasaki has incorporated an exhaust emission control
system in compliance with applicable regulations of the United States Environmental Protection Agency and the
California Air Resources Board. Also, depending on when your engine was produced, it may have an assigned
emissions durability period.
*See below for the engine emissions durability period that may apply to your engine.
Exhaust Emission Control System
The exhaust emission control system applied to this engine consists of a carburetor and an ignition system
having optimum ignition timing characteristics. The carburetor has been calibrated to provide specic air/fuel
mixture characteristics and optimum fuel economy with a suitable air cleaner and exhaust system.
A sealed-type crankcase emission control system is also used to eliminate blow-by gasses. The blow-by
gasses are led to a breather chamber through the crankcase and from there to the air cleaner.
Engine Emission Compliance Period California
Engines Greater Than or Equal To 225 cc
Model Year - 2015 and later
Durability period - 1 000 hours
* If your engine has an assigned emissions durability period it will be located on the certication label
attached to the engine (IMPORTANT ENGINE INFORMATION).
All Other States
Engines Greater Than or Equal To 225 cc
Model Year - 2015 and later
Durability Period - 1 000 hours (Category A)
High Altitude Performance Adjustment Information
To improve the EMISSIONS CONTROL PERFORMANCE of engines operated above 1000 meters
(3300 feet), Kawasaki requires the following Environmental Protection Agency (EPA) and California Air
Resources Board (CARB) approved modications. High altitude adjustment requires replacement of carburetor
main jets. Installation of these optional parts may be performed by an authorized Kawasaki engine dealer or
equally qualied service facility, or the consumer, following repair recommendations specied in the appropriate
Kawasaki Service document or parts catalog.
Operating with the wrong conguration at a given altitude may increase its emissions and decrease fuel
efciency and performance.
NOTE
○When properly performed, these specied modications only are not considered to be emissions system
“tampering” and engine performance is generally unchanged as a result.
○Engine models with fuel injection do not require high altitude performance adjustment.
Maintenance and Warranty
Proper maintenance is necessary to ensure that your engine will continue to have low emission levels. This
Owner’s Manual contains those maintenance recommendations for your engine. Those items identied by the
Periodic Maintenance Chart are necessary to ensure compliance with the applicable standards.
As the owner of the engine, you have the responsibility to make sure that the recommended maintenance is
carried out according to the instructions in this Owner’s Manual at your own expense.
The Kawasaki Limited Emission Control System Warranty requires that you return your engine to an
authorized Kawasaki engine dealer for remedy under warranty. Please read the warranty carefully, and keep it
valid by complying with the owner’s obligations it contains.
Tampering with Emission Control System Prohibited
Federal law and California State law prohibits the following acts or the causing thereof: (1) the removal or
rendering inoperative by any person other than for purposes of maintenance, repair, or replacement, of any
device or element of design incorporated into any new engine for the purposes of emission control prior to its
sale or delivery to the ultimate purchaser or while it is in use, or (2) the use of the engine after such device or
element of design has been removed or rendered inoperative by any person.
Among those acts presumed to constitute tampering are the acts listed below:
Do not tamper with the original emission related parts:
●Carburetor or DFI system, and their internal parts
●Spark Plug
●Magneto or electronic ignition system
●Fuel lter element
●Air cleaner elements
●Crankcase
●Cylinder heads
●Breather chamber and internal parts
●Intake pipe and tube
FOREWORD
We wish to thank you for purchasing this Kawasaki engine.
Please read this Owner’s Manual carefully before starting your new engine so that you will be thoroughly
familiar with the proper operation of your engine’s control, its features, capabilities and limitations.
Also read the manual of the equipment to which this engine is attached.
To ensure a long, trouble-free life for your engine, give it the proper care and maintenance described in this
manual. Always keep this manual at your ngertip so that you can refer to it whenever you need information.
This manual should be considered a permanent part of the engine and should remain with the engine when it
is sold.
All rights reserved. No part of this publication may be reproduced without our prior written permission.
This publication includes the latest information available at the time of printing. However, there may be minor
differences between the actual product and illustrations and text in this manual.
All products are subject to change without prior notice or obligation.
KAWASAKI HEAVY INDUSTRIES, LTD.
Motorcycle & Engine Company
© 2007 Kawasaki Heavy Industries, Ltd. Mar. 2016 (7) (I)
TABLE OF CONTENTS
GENERAL INFORMATION ............................... 8
Location of Safety Related Labels ................... 8
Location of Parts ............................................. 9
Engine Serial Number ..................................... 10
Tune-up Specications .................................... 10
Engine Oil Capacity ......................................... 11
FUEL AND OIL RECOMMENDATIONS ............ 12
Fuel ................................................................. 12
Engine Oil ........................................................ 13
PREPARATION ................................................. 14
Fuel ................................................................. 14
Engine Oil ........................................................ 15
STARTING ......................................................... 16
Start Engine ..................................................... 16
OPERATING ...................................................... 19
Warming Up ..................................................... 19
Engine Inclination ............................................ 20
STOPPING ........................................................ 21
Stopping the Engine ........................................ 21
Ordinary Stop ............................................... 21
Emergency Stop ........................................... 21
ADJUSTMENT .................................................. 22
Separate Choke Type ...................................... 22
Throttle Cable Installation, Adjustment ......... 22
Choke Cable Installation, Adjustment ........... 22
Engine Speed Adjustment ............................... 23
MAINTENANCE ................................................ 24
Periodic Maintenance Chart ............................ 24
Oil Level Check ............................................... 26
Oil Cooler Service ........................................... 26
Oil Change ...................................................... 27
Oil Filter Change ............................................. 28
Air Cleaner Service ......................................... 29
Air Cleaner ................................................... 29
Primary Element ........................................... 29
Secondary Element ...................................... 29
Cap (Dust Ejector Valve) .............................. 29
Fuel Filter and Fuel Pump Service .................. 31
Spark Plug Service .......................................... 32
Cooling System Cleaning ................................ 33
STORAGE ......................................................... 34
Engine Storage Procedure .............................. 34
TROUBLESHOOTING GUIDE .......................... 36
ENVIRONMENTAL PROTECTION ................... 37
SPECIFICATIONS ............................................. 38
WIRING DIAGRAM ........................................... 39
Wiring Diagram
(With 12 V - 15 A Charging Coil) ..................... 39
8 GENERAL INFORMATION
GENERAL INFORMATION
Location of Safety Related Labels
B
A. Warning Label
B. Engine Maintenance
A
Location of Parts
GENERAL INFORMATION 9
D
O
G
E
N
O
F
M
H
I
A
C
B
C
A. Oil Gauge Filler
B. Oil Filter
C. Oil Drain Plug
D. Air Cleaner
E. Carburetor
F. Spark Plug Cap/
Spark Plug
G. Guard
H. Fan Housing
I. Electric Starter
J. Voltage Regulator
K. Fuel Tube
L. Fuel Filter
M. Oil Cooler
N. Control Panel
O. Cleanout Cover
(if equipped)
J
F
K
L
10 GENERAL INFORMATION
Engine Serial Number
The engine serial number is your only means of
identifying your particular engine from others of the
same model type.
This engine serial number is needed by your
dealer when ordering parts.
A
A. Engine Serial Number
Tune-up Specications
ITEM Specications
Ignition Timing Unadjustable
Spark Plugs:
Gap
Low Idle Speed 1 550 r/min (rpm)
High Idle Speed 3 600 r/min (rpm)
Valve Clearance
Other Specications
NGK BPR4ES
0.75 mm (0.030 in)
IN 0.10 - 0.15 mm
(0.004 - 0.006 in)
EX 0.10 - 0.15 mm
(0.004 - 0.006 in)
No other adjustment
needed
NOTE
○High and low idle speeds may vary depending on
the equipment on which the engine is used. Refer
to the equipment specication.
Engine Oil Capacity
Engine Oil Capacity
2.1 L (2.2 US·qt)
FX801V
FX751V
[when oil lter is not removed]
2.3 L (2.4 US·qt)
[when oil lter is removed]
GENERAL INFORMATION 11
12 FUEL AND OIL RECOMMENDATIONS
FUEL AND OIL RECOMMENDATIONS
Fuel
Use only clean, fresh, unleaded regular grade
gasoline.
NOTICE
Do not mix oil with gasoline.
Octane Rating
The octane rating of a gasoline is a measure of its
resistance to “knocking”. Using a minimum of 87
octane by the antiknock index is recommended.
The antiknock index is posted on service station
pumps in the U.S.A.
NOTE
○If “knocking” or “pinging” occurs, use a different
brand of gasoline or higher octane rating.
○When not operating your kawasaki engine more
than once per month, you can mix a fuel stabilizer
with gasoline in the fuel tank. Fuel stabilizer
additive could inhibit oxidation of fuel.
Oxygenated Fuel
Oxygenates (either ethanol or MTBE) are added
to the gasoline. If you use the oxygenates, be sure it
is unleaded and meets the minimum octane rating
requirement.
The followings are the EPA approved percentages
of fuel oxygenates.
ETHANOL: (Ethyl or Grain Alcohol)
You may use gasoline containing up to 10%
ethanol by volume.
MTBE: (Methyl Tertiary Butyl Ether)
You may use gasoline containing up to 15% MTBE
by volume.
METHANOL: (Methyl or Wood Alcohol)
You may use gasoline containing up to 5%
methanol by volume, as long as it also contains
cosolvents and corrosion inhibitors to protect the
fuel system. Gasoline containing more than 5%
methanol by volume may cause starting and/or
performance problems. It may also damage metal,
rubber, and plastic parts of your fuel system.
Engine Oil
The following engine oils are recommended.
API Service Classication: SF, SG, SH, SJ or SL.
Oil Viscosity
Choose the viscosity according to the temperature
as follows:
-20ºC -10ºC 0ºC 10ºC 20ºC 30ºC 40ºC
SAE40
SAE30
SAE20W-50
FUEL AND OIL RECOMMENDATIONS 13
SAE5W-20
SAE5W-20
-4ºF 14ºF 32ºF 50ºF 68ºF 86ºF 104ºF
SAE10W-40
SAE10W-30
NOTE
○Although 10W-40 engine oil is the recommended
oil for most conditions, the oil viscosity may need
to be changed to accommodate atmospheric
conditions. Using 20W-50 oil in higher ambient
temperatures may reduce oil consumption.
14 PREPARATION
PREPARATION
Fuel
WARNING
Gasoline is extremely ammable and can be
explosive under certain conditions, creating
the potential for serious burns. Turn the
ignition switch to “OFF”. Do not smoke.
Make sure the area is well-ventilated and
free from any source of ame or sparks; this
includes any appliance with a pilot light.
Never ll the tank completely to the top. If
the tank is lled completely to the top, heat
may cause the fuel to expand and overow
through the vents in the tank cap. After
refueling, make sure the tank cap is closed
securely. If gasoline is spilled on the fuel
tank, wipe it off immediately.
●Place the engine on level surface before fueling.
●Remove the fuel tank cap.
●Slowly pour fuel into the tank through the fuel
strainer.
●Close the tank cap securely.
Engine Oil
Check the engine oil daily before starting the
engine otherwise shortage of the engine oil may
cause serious damage to the engine such as
seizure.
●Place the engine on level surface. Clean are a
around the oil gauge before removing it.
●Remove the oil gauge and wipe it with a clean
cloth.
●Pour the oil slowly to “FULL” mark on the oil
gauge.
●Insert the oil gauge into tube WITHOUT
SCREWING IT IN.
●Remove the oil gauge to check the oil level. The
level should be between “ADD” and “FULL” marks.
Do not overll.
●Install and tighten the oil gauge.
Engine Oil Capacity
2.1 L (2.2 US·qt)
FX801V
FX751V
[when oil lter is not removed]
2.3 L (2.4 US·qt)
[when oil lter is removed]
PREPARATION 15
B
A
A. Oil Gauge
B. Tube
NOTICE
The engine is shipped without engine oil.
16 STARTING
STARTING
Start Engine
DANGER
Exhaust gas contains carbon monoxide, a
colorless, odorless poisonous gas. Inhaling
carbon monoxide can cause serious brain
injury or death. DO NOT run the engine in
enclosed areas. Operate only in a wellventilated area.
WARNING
Engine exhaust may ignite combustible
materials and cause a re.
Keep the area around the exhaust outlet
clear. Locate the unit so that the exhaust
outlet points toward an open area and is
located at least one meter (3.3 feet) from any
obstructions.
NOTE
○Be aware of the following in order to start the
engine easily in cold weather.
○Use proper oil for expected temperature (See
FUEL AND OIL RECOMMENDATIONS chapter).
Use fresh gasoline.
○Protect the engine or the equipment from direct
exposure to weather when not in operation.
○Before starting the engine, disconnect all possible
external loads.
●Open the fuel valve on the equipment.
●Put the engine switch key into the engine switch.
For Control Panel Switch Type, move the throttle
lever on the equipment to its halfway position
between “SLOW” speed and “FAST” speed.
Moving the lever away from its low speed end
turns ignition on.
[Separate Choke type]
For a Cold Engine - Place the choke control lever
into “CHOKE” position.
●After starting the engine, gradually return the
choke control lever to the fully open position.
STARTING 17
THROTTLE
A. Fuel Valve
A
CHOKE
FAST
SLOW
ON
ON
A
A
A. Throttle Lever
A. Throttle Lever
18 STARTING
●Put the switch key into the engine switch.
●Turn the switch key to the START position on the
equipment. Normally the engine will start within
3 seconds.
OFF
ON
START
A
A. Switch Key
NOTICE
Do not run the electric starter continuously
for more than 5 seconds, otherwise the
battery may discharge quickly. If the engine
does not start right away, wait 15 seconds
and try again.
NOTICE
Whenever you start engine, make sure
warning light is not illuminated after engine
starts.
If warning light comes on, stop engine
immediately and check oil level (If equipped).
OPERATING
OPERATING 19
Warming Up
After the engine starts, move the throttle lever on
the equipment to halfway between “FAST” and
“SLOW”.
To warm up the engine, run it for 3 to 5 minutes
with the throttle lever in the same load position
(halfway) before putting the equipment under load.
Then, move the throttle lever on the equipment to its
“FAST” position.
A
A. Throttle Lever
NOTICE
Allow engine to warm up sufciently (3 to 5
minutes at idle) before applying a load. This
will allow oil to reach all engine parts, and
allow piston clearance to reach design
specications.
NOTICE
While warming up the engine, make sure the
warning light (oil pressure) on dash is not
on. The warning light must not be illuminated
during engine operation (if equipped).
20 OPERATING
Engine Inclination
This engine will operate continuously at angles up
to 25° in any direction.
Refer to the operating instructions of the
equipment this engine powers. Because of
equipment design or application, there may be more
stringent restrictions regarding the angle of
operation.
NOTICE
Do not operate this engine continuously at
angles exceeding 25° in any direction.
Engine damage could result from insufcient
lubrication.
STOPPING
STOPPING 21
Stopping the Engine
Ordinary Stop
●Move throttle lever to “SLOW” position.
●Lower the engine speed to the idle speed. Keep
running at the idle speed for about one minute.
NOTICE
Engine damage can occur from run-on or
after-burning if engine is stopped suddenly
from high speed loaded operation. Reduce
engine speed to idle for one minute before
shutting engine off.
●Turn the engine switch or the switch key to “OFF”
position.
For Control Panel Switch Type, move the throttle
lever against its low speed end to turn the ignition
off.
Emergency Stop
●Immediately turn the engine switch or the switch
key to “OFF” position.
●Close the fuel valve on the equipment.
For Control Panel Switch Type, move the throttle
lever on the equipment to its low speed end. Moving
the lever to its low speed end turns ignition off.
A
THROTTLE
A. Throttle Lever
WARNING
Leaving the equipment with the key hanging
in the ignition can allow operation by
someone who does not know how to operate
it. It may cause serious accident with injury.
Always remove the key from unattended
equipment.
22 ADJUSTMENT
ADJUSTMENT
Separate Choke Type
Throttle Cable Installation, Adjustment
●Link the throttle cable to the speed control lever
and loosely clamp the throttle cable outer housing
with the cable clamp bolt.
●Move the throttle lever to “FAST” position.
●Pull up the outer housing of the throttle cable until
the inner wire has almost no slack, and tighten the
cable clamp bolt.
●Move the throttle lever to “SLOW” position. Make
sure that the carburetor throttle valve pivot arm is
moved smoothly.
Choke Cable Installation, Adjustment
●Link the choke cable to the choke lever, and
loosely clamp the choke cable outer housing with
the cable clamp bolt.
●Move the equipment choke control to “OPEN”
position. Make sure that the carburetor choke
valve (pivot arm) is fully opened.
●Pull up the outer housing of the choke cable until
the inner wire has almost no slack, and tighten the
cable clamp bolt.
●Move the equipment choke control to “CHOKE”
position. Make sure that the carburetor choke
valve (pivot arm) is completely closed.
●Make sure that the choke valve turns from fully
close position to fully open position when actuating
the equipment choke control.
E
A. Throttle Cable
B. Speed Control Lever
C.H. Cable Outer Housing
D.J. Cable Clamp Bolt
I F J
AB
E. Pirot Arm
F. Choke Cable
I. Choke Lever
D
H
C
E. Throttle Valve Pivot Arm
G. Choke Valve Pivot Arm
ADJUSTMENT 23
Engine Speed Adjustment
NOTE
E
G
○Do not tamper with the governor setting or the
carburetor setting to increase the engine speed.
Every carburetor is adjusted at the factory and
cap or stop plate is installed on each mixture
screw.
○If any adjustment is necessary, see your
authorized Kawasaki engine dealer or equally
qualied service facility to perform the adjustment.
24 MAINTENANCE
MAINTENANCE
Maintenance, replacement, or repair of the emission control devices and systems may be performed by
any nonroad engine repair establishment or individual.
Periodic Maintenance Chart
WARNING
Prevent accidental starting during engine service by removing the spark plug caps.
NOTE
○The service intervals indicated are to used as a guide. Service more frequently as necessary by operating
conditions.
MAINTENANCE 25
INTERVAL
MAINTENANCE
Check and add engine oil.
Check for loose or lost nuts and screws. ●
Check for fuel and oil leakage. ●
Check battery electrolyte level. ●
Check or clean air inlet screen. ●
Check cleanout cover. ●
Clean dust and dirt from cylinder and cylinder
head ns.
Tighten nuts and screws. ●
Change engine oil. ●
Check and clean oil cooler ns. ●
Clean and regap spark plugs. ●
Change oil lter. ●
Replace air cleaner primary element. ●
Check air cleaner secondary element. ●
Clean combustion chamber. ●
Check and adjust valve clearance. ●
Clean and lap valve seating surface. ●
Replace air cleaner secondary element. ●
Daily
●
Every
50 hr.
Every
100 hr.
●
Every
200 hr.
Every
250 hr.
Every
300 hr.
Every
500 hr.
: Service more frequently under dusty conditions.
: Service to be performed by an authorized Kawasaki engine dealer or equally qualied service facility.
26 MAINTENANCE
Oil Level Check
Check the oil level daily and before each time of
operation. Be sure the oil level is maintained. See
PREPARATION chapter.
Engine Oil Capacity
2.1 L (2.2 US·qt)
FX801V
FX751V
[when oil lter is not removed]
2.3 L (2.4 US·qt)
[when oil lter is removed]
B
A
Oil Cooler Service
Check and clean oil cooler ns every 100 hours.
●Clean dirt off the outside ns with a brush or
compressed air.
A
A. Oil Cooler Fins
A. Oil Gauge
B. Tube
MAINTENANCE 27
Oil Change
Change oil every 100 hours.
●Run the engine to warm oil.
● Be sure the engine (equipment) is on level surface.
●Stop the engine.
●Remove the oil drain plug and drain the oil into a
suitable container while engine is warm.
WARNING
Hot engine oil can cause severe burns.
Allow engine temperature to drop from hot to
warm level before draining and handling oil.
●Install the oil drain plug.
●Remove the oil gauge and rell with fresh oil (See
FUEL AND OIL RECOMMENDATIONS chapter).
●Check the oil level (see PREPARATION chapter).
WARNING
Engine oil is a toxic substance. Dispose of
used oil properly. Contact your local
authorities for approved disposal methods
or possible recycling.
A. Oil Drain Plug
A
28 MAINTENANCE
Oil Filter Change
●Change the oil lter every 200 hours of operation.
WARNING
Hot engine oil can cause severe burns.
Allow engine temperature to drop from hot to
warm level before attempting to remove oil
lter.
●Drain the engine oil into a suitable container.
NOTICE
Before removing the oil lter, place suitable
pan under lter connection.
●Rotate the oil lter counterclockwise to remove it.
●Coat a lm of clean engine oil on the seal of new
lter.
●Install new lter rotating it clockwise until the seal
contacts the mounting surface. Then rotate the
lter 2/3 turn more by hand.
●Supply engine oil as specied.
●Run the engine for about 3 minutes, stop the
engine, and check any oil leakage around the
lter.
●Add oil to compensate for oil level drop due to oil
lter capacity (see PREPARATION chapter).
B
A
A. Oil Filter
B. Mounting Surface
WARNING
Engine oil is a toxic substance. Dispose of
used oil properly. Contact your local
authorities for approved disposal methods
or possible recycling.
MAINTENANCE 29
Air Cleaner Service
NOTICE
Do not run the engine with the air cleaner
removed.
Air Cleaner
This air cleaner elements are not recommended
to be cleaned. Replace each air cleaner element
with a new one at the maintenance time as shown in
the maintenance chart.
NOTICE
To prevent excessive engine wear, do not
run the engine with the air cleaner removed.
NOTICE
Do not wash air cleaner elements.
Do not oil air cleaner elements.
Do not use pressurized air to clean air
cleaner elements.
NOTE
○Operating in dusty condition may require more
frequent maintenance.
Primary Element
Replace the primary element every 250 hrs.
Secondary Element
●Replace the secondary element with a new one, if
the secondary element is dirty when the primary
element is checked.
●Replace the secondary element with a new one
every 500 hrs.
Cap (Dust Ejector Valve)
Push and open the cap on the case of the air
cleaner body to expel dust and/or water accumulated
inside.
●Unfasten the two retaining clamps and remove
the case from the air cleaner body.
●Remove the primary element and the secondary
element from the air cleaner body by pulling out
them.
30 MAINTENANCE
●Install the new air cleaner elements into the air
cleaner body.
●Reinstall the case and the cap then securely
fasten the two retaining clamps.
C
A
B
E
D
F
A. Retaining Clamps
B. Case
C. Air Cleaner Body
F. Cap (Dust Ejector Valve)
D. Primary Element
E. Secondary Element
Fuel Filter and Fuel Pump Service
MAINTENANCE 31
WARNING
Improper use of solvents can result in re or
an explosion.
Do not use gasoline or low ash-point
solvents to clean the fuel lter and/or the fuel
pump.
Clean only in a well ventilated area away from
sources of sparks or ame, including any
appliances with a pilot light.
●The fuel lter can not be disassembled. If the fuel
lter gets clogged, replace it with a new one.
●The fuel pump can not be disassembled. If the
fuel pump fails, replace it with a new one.
B
A
A. Fuel Filter
B. Fuel Pump
32 MAINTENANCE
Spark Plug Service
WARNING
Engines can become extremely hot during
normal operation. Hot engine components
can cause severe burns. Stop the engine and
allow it to cool before checking spark plugs.
Clean or replace the spark plugs and reset the
gap every 100 hours of operation.
●Disconnect the spark plug caps from the spark
plugs and remove the spark plugs.
●Clean the electrodes by scraping or using a wire
brush to remove carbon deposits.
●Inspect for cracked porcelain, other wear or
damage. Replace the spark plug with a new one if
necessary.
●Check the spark plug gap and reset it if necessary.
The gap must be 0.75 mm (0.030 in). To change
the gap, bend only the side electrode, using a
spark plug tool.
●Install and tighten the spark plugs to 22 N·m
(2.2 kgf·m, 16 ft·lb).
●Fit the spark plug caps on the spark plugs securely.
●Pull up the spark plug caps lightly to make sure of
the installation of the spark plug caps.
RECOMMENDED SPARK PLUG
NGK..................................BPR4ES
A. Spark Plug Gap
B. Electrodes
Cooling System Cleaning
Before each operation, check that the air inlet
(rotary) screen is free from grass and debris. Clean
the screen if necessary. Every 50 hours of operation,
check the inside fan housing from the cleanout
covers. To inspect the inside, loosen bolts of the
cleanout covers and remove them. Every 100 hours
of operation, check and clean the cooling ns and the
inside of engine shrouds to remove grass, chaff or dirt
clogging the cooling system and causing overheating.
When cleaning, remove the guard and air inlet screen,
then remove the fan housing and engine shrouds
(includes removing the air cleaner, fuel pump, oil
cooler and the voltage regulator parts) if necessary.
NOTICE
Do not run engine before all cooling system
parts are reinstalled to keep cooling and
carburetion as intended.
[Bolts Size, Tightening Torque]
Bolts Size Length Tightening torque
B M6 12 mm 5.9 N·m (0.6 kgf·m, 4.3 ft·lb)
D M6 10 mm 5.9 N·m (0.6 kgf·m, 4.3 ft·lb)
F M6 81 mm 5.9 N·m (0.6 kgf·m, 4.3 ft·lb)
I M6 12 mm 8.8 N·m (0.9 kgf·m, 6.5 ft·lb)
A
D
E
B
F
H
B
H
H
B
I
B
A. Guard
B.D.F.I. Bolt
C. Air Inlet Screen
E. Fan Housing
MAINTENANCE 33
B
C
B
J
I
G
I
I
B
H
I
G. Cooling Fan
H. Shroud
J. Cleanout Cover
34 STORAGE
STORAGE
Engine Storage Procedure
When not operating your Kawasaki engine more
than 30 days, add fuel stabilizer to fuel tank and run
engine for 5 minutes then drain the fuel tank.
After drain the fuel tank, run the engine at low idle
until engine stalled.
WARNING
Gasoline is extremely ammable and can be
explosive under certain conditions.
Drain fuel before storing the equipment for
extended periods.
Drain gasoline in a well ventilated area away
from any source of ame or sparks, including
any appliances with a pilot light. Store
gasoline in an approved container in safe
location.
●Clean every part of the engine.
●Be sure that the engine switch or switch key is
positioned at “OFF” position.
●Close the fuel valve and remove the sediment
bowl.
●Put a pan under the fuel valve to receive the
drained gasoline and open the fuel valve to drain
the gasoline from fuel tank completely.
●Install the sediment bowl.
●Put a pan under the carburetor and loosen the
drain screw of the carburetor to drain the gasoline
completely.
●Tighten the drain screw.
A
A. Fuel Drain Screw
WARNING
Gasoline is a toxic substance. Dispose of
gasoline properly. Contact your local
authorities for approved disposal methods.
●Remove the spark plugs and pour approx 1-2 mL
(0.06-0.1 cu in.) of engine oil through the spark
plug holes then screw the spark plugs in after
turning the engine a few times. Slowly turn the
engine until you feel the compression then leave it
there. This traps the air inside the cylinders and
prevents rust inside the engine.
●Wipe the body with oily cloth.
●Wrap the engine with plastic sheeting and store it
in a dry place.
●Change engine oil for next use after period of
storage. (Refer to MAINTENANCE chapter for Oil
Change section).
A
STORAGE 35
A. Spark Plug Hole
36 TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
If the engine malfunctions, carefully examine the symptoms and the operating conditions, and use the table
below as a guide to trouble shooting.
Symptom Probable Cause Remedy
Engine
won’t start
or output is
low
Low output Engine
: Service to be performed by an authorized Kawasaki engine dealer or equally qualied service facility.
M : For Control Panel Switch Type, move the throttle lever on the equipment away from its low speed end to turn the engine
switch to “START” position.
Insufcient
compression
No fuel to
combustion
chamber
Spark plugs
fouled by fuel
No spark or
weak spark
overheats
Engine speed
won’t increase
Faulty pistons, cylinders, piston rings, and head gaskets
Faulty valves
Loose spark plugs Tighten properly
Loose cylinder head bolts
No fuel in fuel tank Fill fuel tank
Fuel valve is not in “ON” position. Open fuel valve lever.
Clogged fuel lter or tube Change fuel lter or fuel tube
Clogged air vent in tank cap Clean fuel tank cap
Faulty carburetor
Over-rich fuel/air mixture Open choke.
Clogged air cleaner Clean
Faulty carburetor
Incorrect grade/type of fuel Change fuel
Water in fuel
Faulty spark plugs Replace spark plugs
Faulty ignition coils
Engine switch is in “OFF” position Turn engine switch to “START” position (See M)
Clogged air cleaner Clean
Air inlet screen or cooling air path clogged with dirt
Insufcient engine oil Replenish or change oil
Carbon build-up in combustion chamber
Poor ventilation around engine Select a better location
Faulty governor
Rotate engine with spark plugs removed to discharge excess fuel.
Clean spark plugs.
ENVIRONMENTAL PROTECTION 37
ENVIRONMENTAL PROTECTION
To help preserve the environment, properly discard used batteries, oils and uids, or other engine components
that you might dispose of in the future.
Consult your authorized Kawasaki engine dealer or equally qualied service facility or local environmental
waste agency for their proper disposal procedure. This also applies to disposal of the entire engine at the end
of its life.
38 SPECIFICATIONS
SPECIFICATIONS
FX801V, FX751V
Type Air-cooled, 4-stroke OHV 4Valves, V-twin cylinder, gasoline engine
Bore × Stroke 84.5 × 76 mm (3.33 × 2.99 in.)
Displacement 852 mL (52 cu.in.)
Ignition System Solid-state ignition
Direction of rotation Counterclockwise facing the PTO Shaft
Starting system Electric starter
Dry weight : kg (lbs) 56.4 kg (124 lbs)
NOTE
○Specications are subject to change without notice.
○Dry weight excludes that of the fuel tank and the mufer.
WIRING DIAGRAM
Wiring Diagram
(With 12 V - 15 A Charging Coil)
WARNING
For electrical safety, always remove cable
from negative (–) side of battery before
attempting any repair or maintenance.
Battery Capacity Recommended
Minimum Recommended Battery Capacity
12 V 550 CCA Class
NOTE
○Portion surrounded by hatching shows Kawasaki
procurement parts.
WIRING DIAGRAM 39
A. Flywheel
B. Ignition Coils
C. Charging Coil
D. Spark Plugs
E. Battery
F. Key Switch
G. Fuse
H. Voltage Regulator
I. Electric Starter
J. Carburetor
WARNING
The engine exhaust from this product
contains chemicals known to the
State of California to cause cancer,
birth defects or other reproductive
harm.
For repair / warranty assistance please contact
your local Kawasaki Authorized Dealer,
email: kawpower-website@kmc-usa.com or
call toll-free 1-877-364-6404
Part No. 99920-2231-07
Printed in Japan
GB
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