19 TROUBLESHOOTING
112
Faults Possible cause Action
Engine turns but does not start Operating error – Carry out the start procedure.
( p. 26)
Motorcycle was out of use for a
long time and there is old fuel
in the float chamber
– Empty the carburetor float chamber.
( p. 102)
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.
Plug gap of spark plug too wide – Adjust plug gap.
Guideline
Spark plug electrode gap
0.60 mm (0.0236 in)
Fault in ignition system – Check the ignition system.
– Adjust the ignition.
Short-circuit cable in wiring
harness frayed, switch-off but-
ton faulty
– Check the switch-off button.
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. 101)
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.
– Adjust the ignition.
Engine has too little power Fuel feed interrupted – Check the fuel tank breather.
– Clean the fuel tap.
– Check/set the carburetor components.
Air filter is very dirty – Clean the air filter and air filter box.
( p. 57)
Exhaust system leaks,
deformed or too little glass
fiber yarn filling in main
silencer
– Check exhaust system for damage.
– Change the glass fiber yarn filling of
the main silencer. ( p. 58)
Fault in ignition system – Check the ignition system.
– Adjust the ignition.
Membrane or reed valve hous-
ing is damaged
– Check the membrane and reed valve
housing.
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