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20 TROUBLESHOOTING
Faults
The engine cannot be cranked
(starter motor)
The engine turns but does not
start
The engine has no idle speed
Engine does not speed up
Engine has too little power
120
Possible cause
Operating error
12-V battery discharged
Main fuse blown
Starter relay faulty
Starter motor faulty
Operating error
Quick release coupling not joined
Idle speed is not set correctly
Fuel supply interrupted
Spark plug sooty or wet
Plug gap of spark plug too wide
Ignition system defective
Short-circuit cable in wiring har-
ness frayed, stop button faulty
The connector or ignition coil is
loose or oxidized
Malfunction in the electronic fuel
injection
Spark plug defective
Ignition system defective
Idle speed is not set correctly
Malfunction in the electronic fuel
injection
Ignition system defective
Ambient pressure is incorrectly
stored
Air filter very dirty
Fuel filter is very dirty
Fuel screen is very dirty
Malfunction in the electronic fuel
injection
Fuel supply interrupted
Exhaust system leaky, deformed
or too little glass fiber yarn filling
in main silencer
Ignition system defective
Action
–
Carry out the start procedure. (
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the closed current.
–
Check the stator winding of the alterna-
tor.
–
Change the main fuse. (
p. 92)
–
Check the starter relay.
–
Check the starter motor.
–
Carry out the start procedure. (
–
Join quick release coupling.
–
Adjust the idle speed.
(
–
Check the fuel tank breather.
–
Clean and dry the spark plug and spark
plug connector, or change if necessary.
–
Adjust plug gap.
Guideline
Spark plug electrode gap
0.6 mm (0.024 in)
–
Check the ignition coil.
–
Check the spark plug connector.
–
Check the stop button.
–
Clean the connector and treat it with con-
tact spray.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
–
Change the spark plug.
–
Check the ignition coil.
–
Check the spark plug connector.
–
Adjust the idle speed.
(
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
–
Check the ignition coil.
–
Check the spark plug connector.
–
Program ambient air pressure. (
–
Clean the air filter and air filter box.
(
p. 57)
–
Change the fuel filter.
–
Change the fuel screen.
(
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
–
Check the fuel tank breather.
–
Check exhaust system for damage.
–
Change the glass fiber yarn filling of the
main silencer.
(
p. 59)
–
Check the ignition coil.
–
Check the spark plug connector.
p. 25)
(
p. 91)
p. 25)
p. 103)
p. 103)
p. 104)
p. 107)
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