Generic Race 50, Service Manual

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Trouble diagnosis program for engine overheat
Engine
overheats
Check for improper method of
operation and usage
1. Check gasoline for inferior
brand or extended storage
2. Check if engine has ever run at
high speed or worked under
overload during running
Check cooling
system
Air cooling
engine
Check radiating fins for sticking mud
and sand or excessive oil stains
Clea
n
Check cooling fan and its
cowl for damage (forced air
cooling engine)
Check and
troublesho
Use an ignition timing
light to detect if engine
ignition timing is
correct
1. Check CDI
igniter for
malfunction
2. Check magneto
flywheel and trigger
coil for looseness
Check for clutch slip
Clutch slips
Refer to
handling of
clutch slip