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Faults
Engine turns but does not start
Engine has no idle speed
Engine does not speed up
Engine has too little power
Engine stalls or is popping into
the carburetor
Possible cause
Operating error
The motorcycle has been in dis-
use for an extended period and
old fuel is in the float chamber
Fuel feed interrupted
Spark plug oily or wet
Plug gap of spark plug too wide
Fault in ignition system
Kill switch cable in wiring har-
ness frayed, kill switch defec-
tive
The connector or ignition coil is
loose or oxidized
Water in carburetor or jets
blocked
Idling jet blocked
Adjusting screws on carburetor
distorted
Spark plug defective
Ignition system defective
Carburetor running over
because float needle dirty or
worn
Loose carburetor jets
Fault in ignition system
Fuel feed interrupted
Air filter very dirty
Exhaust system leaky,
deformed or too little glass
fiber yarn filling in main
silencer
Fault in ignition system
Diaphragm or reed valve hous-
ing damaged
Lack of fuel
TROUBLESHOOTING 19
Action
–
Carry out the start procedure.
(
p. 26)
–
Empty the carburetor float chamber.
(
p. 105)
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor components.
–
Clean and dry the spark plug, or
change it if necessary.
–
Adjust plug gap.
Guideline
Spark plug electrode gap
0.60 mm (0.0236 in)
–
Check the ignition system.
–
Check the kill switch.
–
Clean the connector and treat it with
contact spray.
–
Check/set the carburetor components.
–
Check/set the carburetor components.
–
Carburetor - adjust the idle speed.
(
p. 101)
–
Change the spark plug.
–
Check the ignition coil.
–
Check the spark plug connector.
–
Check/set the carburetor components.
–
Check/set the carburetor components.
–
Check the ignition system.
–
Check the fuel tank breather.
–
Clean the fuel tap.
–
Check/set the carburetor components.
–
Clean the air filter and air filter box.
(
p. 59)
–
Check exhaust system for damage.
–
Change the glass fiber yarn filling in
the main silencer.
(
–
Check the ignition system.
–
Check the diaphragm and reed valve
housing.
–
Turn tap handle of the fuel tap to the
ON position.
–
Refuel. (
p. 30)
p. 61)
113
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