Troubleshooting 20 - GAS GAS MC 250F 2022 Owner's Manual

Faults
The engine does not turn when
the start button is pressed
Engine turns but does not start
Engine does not speed up
Engine has too little power
Engine dies during the trip
Engine overheats
Malfunction indicator lamp lights
up or flashes
Possible cause
Operating error
12-V battery discharged
Main fuse blown
Faulty starter relay
Faulty starter motor
Quick release coupling not joined
Fuel screen in the quick release
coupling is clogged
Idle speed is not set correctly
Spark plug sooty or wet
Plug gap of spark plug too wide
Short-circuit cable in wiring har-
ness frayed, stop button faulty
Malfunction in the electronic fuel
injection
Malfunction in the electronic fuel
injection
Air filter is very dirty
Fuel filter is very dirty
Malfunction in the electronic fuel
injection
Exhaust system leaks, deformed
or too little glass fiber yarn filling
in main silencer
Valve clearance too little
Lack of fuel
Too little coolant in cooling system –
Too little air stream
Radiator fins very dirty
Foam formation in cooling system
Bent radiator hose
Malfunction in the electronic fuel
injection

TROUBLESHOOTING 20

Action
–
Carry out start procedure. (
–
Charge the 12-V battery.
–
Check the charging voltage.
–
Check the open-circuit current.
–
Check the stator winding of the alterna-
tor.
–
Change the main fuse. ( p. 96)
–
Check the starter relay.
–
Check the starter motor.
–
Join quick release coupling.
–
Change the fuel screen. (
–
Adjust the idle speed. (
–
Clean and dry the spark plug and spark
plug connector, or change if necessary.
–
Adjust plug gap.
Guideline
Spark plug electrode gap
0.8 mm (0.031 in)
–
Check the wiring harness. (visual check)
–
Check the electrical system.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
–
Clean the air filter and air filter box.
( p. 60)
–
Change the fuel filter.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
–
Check exhaust system for damage.
–
Change the glass fiber yarn filling of the
main silencer. ( p. 62)
–
Adjust the valve clearance.
–
Refuel. ( p. 29)
Check the cooling system for leakage.
–
Check the coolant level. (
–
Switch off the engine when standing.
–
Clean the radiator fins.
–
Drain the coolant. ( p. 99)
–
Refill with coolant. ( p. 100)
–
Change the radiator hose.
–
Check the wiring for damage and the elec-
trical plug-in connections for corrosion
and damage.
–
Read out the fault memory using the GAS-
GAS Motorcycles diagnostics tool.
p. 25)
( p. 95)
p. 107)
p. 104)
p. 99)
117