TROUBLESHOOTING 80
10TROUBLESHOOTING
Faults Possible cause Action
The engine cannot be cranked (elec-
tric starter).
Operating error – Go through the steps of starting the engine.
( p. 28)
Battery discharged –
Recharge the battery. x ( p. 64)
–
Check the charging voltage. x
–
Check the closed current. x
–
Check the generator. x
Fuse blown – Remove the fuse. ( p. 65)
– Install the fuse. ( p. 65)
Starter relay defective –
Check the starter relay. x
Starter motor defective –
Check the starter motor. x
Engine turns but does not start. Operating error – Go through the steps of starting the engine.
( p. 28)
Motorcycle was out of use for a long
time and there is old fuel in the float
chamber
–
Empty the carburetor float chamber. x
( p. 74)
Fuel feed interrupted – Check the fuel tank breather.
– Clean the fuel tap.
–
Check/adjust the carburetor components. x
Engine flooded – Clean and dry the spark plug or replace if nec-
essary.
Spark plug oily or wet – Clean and dry the spark plug or replace if nec-
essary.
Electrode distance (plug gap) of spark
plug too wide
– Adjust plug gap.
Guideline
Spark plug electrode gap
0.9 mm (0.035 in)
Defect in ignition system –
Check the ignition system. x
Short-circuit cable in cable harness
frayed, short-circuit button or emer-
gency OFF switch defective
– Check the wiring harness (visual check).
– Check the electrical system.
Plug connector of CDI control device,
pulse generator or ignition coil oxi-
dized.
– Clean the plug connector and treat it with con-
tact spray.
Water in carburetor or jets blocked –
Check/adjust the carburetor components. x
Engine has no idle. Idling jet blocked –
Check/adjust the carburetor components. x
Adjusting screws on carburetor dis-
torted
–
Carburetor - adjust the idle speed. x
( p. 73)
Spark plug defective – Change spark plug.
Ignition system defective –
Check the ignition coil. x
–
Check the CDI unit. x
–
Check the spark plug connector. x
–
Check the ignition pulse generator. x
–
Check the generator. x
Engine does not speed up. Carburetor running over because float
needle dirty or worn.
–
Check/adjust the carburetor components. x
Loose carburetor jets –
Check/adjust the carburetor components. x
Ignition system defective –
Check the ignition coil. x
–
Check the CDI unit. x
–
Check the spark plug connector. x
–
Check the ignition pulse generator. x
–
Check the generator. x
Engine has too little power. Fuel feed interrupted – Check the fuel tank breather.
– Clean the fuel tap.
–
Check/adjust the carburetor components. x
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