TROUBLESHOOTING 19
115
Faults Possible cause Action
Engine turns but does not start Operating error – Carry out the start procedure.
( p. 27)
Motorcycle was out of use for a
long time and there is old fuel
in the float chamber
– Empty the carburetor float chamber.
( p. 107)
Fuel feed interrupted – Check the fuel tank breather.
– Clean the fuel tap.
– Check/set the carburetor components.
Spark plug oily or wet – Clean and dry the spark plug, or
change it if necessary.
Electrode distance (plug gap)
of spark plug too wide
– Adjust the plug gap.
Guideline
Spark plug electrode gap
0.60 mm (0.0236 in)
Fault in ignition system – Check the ignition system.
Kill switch cable in wiring har-
ness frayed, kill switch defec-
tive
–
Check the kill switch.
The connector or ignition coil is
loose or oxidized
– Clean the connector and treat it with
contact spray.
Water in carburetor or jets
blocked
– Check/set the carburetor components.
Engine has no idle Idling jet blocked – Check/set the carburetor components.
Adjusting screws on carburetor
distorted
– Carburetor – adjust the idle speed.
( p. 104)
Spark plug defective – Change the spark plug.
Ignition system defective – Check the ignition coil.
– Check the spark plug connector.
Engine does not speed up Carburetor running over
because float needle dirty or
worn
– Check/set the carburetor components.
Loose carburetor jets – Check/set the carburetor components.
Fault in ignition system – Check the ignition system.
Engine has too little power Fuel feed interrupted – Check the fuel tank breather.
– Clean the fuel tap.
– Check/set the carburetor components.
Air filter very dirty – Clean the air filter and air filter box.
( p. 61)
Exhaust system leaky,
deformed or too little glass
fiber yarn filling in main
silencer
– Check exhaust system for damage.
– Change glass fiber yarn filling in the
main silencer. ( p. 63)
Fault in ignition system – Check the ignition system.
Diaphragm or reed valve hous-
ing damaged
– Check the diaphragm and reed valve
housing.
Engine stalls or is popping into
the carburetor
Lack of fuel – Turn tap handle of the fuel tap to the
ON position.
– Refuel. ( p. 31)
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