21 TROUBLESHOOTING
147
Faults Possible cause Action
The engine cannot be cranked
(electric starter)
Operating error – Carry out the start procedure.
( p. 44)
Battery discharged – Recharge the battery. ( p. 115)
– Check the charging voltage.
– Check the closed current.
– Check the alternator.
Main fuse is blown – Change the main fuse. ( p. 118)
Starter relay faulty – Check the starter relay.
Starter motor faulty – Check the starter motor.
Engine turns but does not start Operating error – Carry out the start procedure.
( p. 44)
Motorcycle was out of use for a
long time and there is old fuel
in the float chamber
– Empty the carburetor float chamber.
( p. 139)
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. 134)
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.
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