8-1
GO
-KARTS
B
U
MPERBOAT
S
Specifications subject to change without notice - Check our website for valuable information including videos, workshop and operations manuals. www.jjamusements.com
503-304-8899
ENDURANCE CL
UTCH PLA
TES
TM
ENGINE
OVERVIEW
Engine overview................................................. page 8-1
Grabber plate ..................................................... page 8-3
Engine assembly removal .................................. page 8-4
Engine-mounted items ........................................ page 8-6
Hour meter schematic (without Kartrol)...............page 8-7
Hour meter schematic (with Kartrol)....................page 8-8
Tiny Tach schematic............................................page 8-9
Clutch/reduction rebuild................................... page 8-14
Engine FAQs
Q: WHERE DO I FIND MORE INFORMATION ON THE HONDA ENGINE?
A: With each new fleet, the owner’s portfolio provided contains a Honda service manual for the appropriate sized
engine(s) installed on your karts. Replacement Honda service manuals can be purchased separately; contact the parts
department for pricing. The following pages include information on the Honda engines that can be unique to a go-kart
application, and may not be fully explained in the Honda manual. Please refer the Honda service manual for exact
specifications and torque values for any repairs.
Q: HONDA SAYS TO DECARBONIZE THE COMBUSTION CHAMBER: WHY?
A: Small engines are very sensitive to carbon buildup. Excess carbon will cause seemingly unrelated starting and
running problems.
The Honda GX motors come equipped with a spring-loaded
trigger on the cam gear designed to crack the exhaust valve
and release the built-up compression during starting. When
excessive carbon builds up or the valves are way out of
adjustment, the small amount of lift from the trigger may not
allow enough compressed air to escape. The most common
result of this problem is poor starting on cold start, and/or the
motor kicks back and rips the starter handle out of your hand.
CLEANING COMBUSTION CHAMBER AND
VALVES/VALVE SEATS:
A simple wire wheel on a drill motor and a proper scraper
will do the job, but be careful! Do not damage the aluminum
cylinder head. Be sure to clean and inspect the valve stem
and all other components, i.e. rocker arms, valve spring, push
rods, valve tappets and all gaskets. Use a simple valve-lapping
compound and hand-lapping tool to polish the valve face and
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