GAS GAS MC 50 2022 Owner's Manual page 104

20 TROUBLESHOOTING
Faults
Engine stalls or is popping into the
carburetor
Engine overheats
White smoke emission (steam in
exhaust gas)
Gear oil exits at the vent hose
Water in the gear oil
102
Possible cause
Lack of fuel
Engine takes in bad air
The connector or ignition coil is
loose or oxidized
Too little coolant in cooling system –
Too little air stream
Radiator fins very dirty
Foam formation in cooling system
Damaged cylinder head or cylin-
der head gasket
Bent radiator hose
Damaged cylinder head or cylin-
der head gasket
Too much gear oil added
Damaged radial shaft seal ring or
water pump
Action
–
Turn the knurled screw on the fuel tap all
the way counterclockwise.
–
Refuel. ( p. 23)
–
Check the intake flange and carburetor for
tightness.
–
Clean the plug-in connection and treat it
with contact spray.
Check the cooling system for leakage.
–
Check the coolant level. (
–
Switch off engine when standing.
–
Clean radiator fins.
–
Drain the coolant. ( p. 82)
–
Refill with coolant. ( p. 83)
–
Check the cylinder head or cylinder head
gasket.
–
Change the radiator hose.
–
Check the cylinder head or cylinder head
gasket.
–
Check the gear oil level. (
–
Check the radial shaft seal ring and the
water pump.
p. 82)
p. 91)