21 TROUBLESHOOTING
136
Faults
Possible cause
Action
The engine cannot be cranked
(starter motor)
Operating error
–
Carry out the start procedure. (
12-V battery discharged
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the closed current.
–
Check the stator winding of the alterna-
tor.
Main fuse is blown
–
Change the main fuse. (
Starter relay faulty
–
Check the starter relay.
Starter motor faulty
–
Check the starter motor.
The engine turns but does not
start
Operating error
–
Carry out the start procedure. (
Quick release coupling not joined
–
Join quick release coupling.
Idle speed is not set correctly
–
Adjust the idle speed.
Fuel supply interrupted
–
Check the fuel tank breather.
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
0.6 mm (0.024 in)
Faulty ignition
–
Ignition coil - check the primary wind-
ing.
–
Check the spark plug connector.
–
Check the stator winding of the alterna-
tor.
Short-circuit cable in wiring har-
ness frayed, stop button or emer-
gency OFF switch faulty
–
Check wiring harness (visual check).
–
Check the electrical system.
The connector or ignition coil is
loose or oxidized
–
Clean the connector and treat it with con-
tact spray.
Error in the electronic fuel injec-
tion
–
Check wiring for damage and electrical
plug-in connectors for corrosion and dam-
age.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
The engine has no idle speed
Spark plug defective
–
Change the spark plug.
Faulty ignition
–
Ignition coil - check the primary wind-
ing.
–
Check the spark plug connector.
–
Check the stator winding of the alterna-
tor.
Idle speed is not set correctly
–
Adjust the idle speed.
Engine does not speed up
Error in the electronic fuel injec-
tion
–
Check wiring for damage and electrical
plug-in connectors for corrosion and dam-
age.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.