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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
128
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
harness 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
Action
–
Carry out start procedure. (
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the closed current.
–
Check the stator winding of the alter-
nator.
–
Change the main fuse. (
–
Check the starter relay.
–
Check the starter motor.
–
Carry out 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
contact spray.
–
Read out the fault memory using the
Husqvarna 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
Husqvarna Motorcycles diagnostics
tool.
–
Check the ignition coil.
–
Check the spark plug connector.
–
Program ambient air pressure.
(
p. 113)
–
Clean the air filter and air filter box.
(
p. 64)
–
Change the fuel filter.
–
Change the fuel screen.
p. 29)
(
p. 99)
p. 101)
p. 29)
(
p. 112)
(
p. 112)
(
p. 115)
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