
GB-7
PROBLEM
POSSIBLE CAUSE
CORRECTION
Engine does not start or starts,
Wrong starting process.
Refer to the instructions in these
but does not run further.
operating instructions.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Fouled spark plug.
Clean/adjust or replace spark plug.
Clogged fuel fi lter.
Replace the fuel fi lter.
Engine starts, but does not run at full
Wrong choke lever position.
Put the lever to position BETRIEB
power. (OPERATION).
Dirty/clogged spark grid.
Replace the spark grid.
Dirty/clogged air fi lter.
Remove, clean and reassemble fi lter.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Engine splutters.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
No power under load.
Engine does not run smoothly.
Wrong setting of the spark plug.
Clean/adjust or replace spark plug.
Excessive exhaust gases (smoke).
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Improper fuel mixture.
Use the proper fuel mixture (ratio – 40:1).
PROBLEM
POSSIBLE CAUSE
CORRECTION
Engine does not start or starts,
Wrong starting process.
Refer to the instructions in these
but does not run further.
operating instructions.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Fouled spark plug.
Clean/adjust or replace spark plug.
Clogged fuel fi lter.
Replace the fuel fi lter.
Engine starts, but does not run at full
Wrong choke lever position.
Put the lever to position BETRIEB
power. (OPERATION).
Dirty/clogged spark grid.
Replace the spark grid.
Dirty/clogged air fi lter.
Remove, clean and reassemble fi lter.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Engine splutters.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Engine does not run smoothly.
Wrong setting of the spark plug.
Clean/adjust or replace spark plug.
Excessive exhaust gases (smoke).
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Improper fuel mixture.
Use the proper fuel mixture (ratio – 40:1).
PROBLEM
POSSIBLE CAUSE
CORRECTION
Engine does not start or starts,
Wrong starting process.
Refer to the instructions in these
but does not run further.
operating instructions.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Fouled spark plug.
Clean/adjust or replace spark plug.
Clogged fuel fi lter.
Replace the fuel fi lter.
Engine starts, but does not run at full
Wrong choke lever position.
Put the lever to position BETRIEB
power. (OPERATION).
Dirty/clogged spark grid.
Replace the spark grid.
Dirty/clogged air fi lter.
Remove, clean and reassemble fi lter.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Engine splutters.
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Engine does not run smoothly.
Wrong setting of the spark plug.
Clean/adjust or replace spark plug.
Excessive exhaust gases (smoke).
Wrong setting of the carburettor.
Have the carburettor settings adjusted by
an authorised customer service organisation.
Improper fuel mixture.
Use the proper fuel mixture (ratio – 40:1).
an authorised customer service organisation.
power. (OPERATION).
CORRECTING FAILURES OF THE ENGINE