TROUBLESHOOTING 19
113
Faults Possible cause Action
Engine stalls or is popping into
the carburetor
Lack of fuel – Turn handle of the fuel tap to the
ONposition.
– Refuel. ( p. 29)
Engine takes in bad air – Check intake flange and carburetor for
tightness.
The connector or ignition coil is
loose or oxidized
– Clean the connector and treat it with
contact spray.
Engine overheats Too little coolant in cooling sys-
tem
– Check the cooling system for leaks.
– Check the coolant level. ( p. 93)
Too little air stream – Switch off the engine when standing.
Radiator fins very dirty – Clean the radiator fins.
Foam formation in cooling sys-
tem
– Drain the coolant. ( p. 94)
– Refill with coolant. ( p. 94)
Damaged cylinder head or
cylinder head gasket
– Check the cylinder head and cylinder
head gasket.
Bent radiator hose –
Change the radiator hose.
Incorrect ignition point due to
loose stator
– Adjust the ignition.
White smoke emission (steam
in exhaust gas)
Damaged cylinder head or
cylinder head gasket
– Check the cylinder head and cylinder
head gasket.
Gear oil exits at the vent hose Too much gear oil added – Check the gear oil level. ( p. 105)
Water in the gear oil Damaged radial shaft seal ring
or water pump
– Check the radial shaft seal ring and the
water pump.
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