There is no output power or the engine speed is not stable
Conditions Possible causes Recommended step
Other conditions The type of fuel is not correct or the fuel is not
mixed correctly.
Replace the fuel to the correct type of fuel
and the correct mixture.
The fuel filter is dirty. Clean or replace the fuel filter. Refer to
To
clean and examine the fuel filter on page 34
.
The air filters are dirty. Clean the foam air filter and replace the pa-
per air filter.
The muffler is blocked. Clean the muffler.
The airflow is not sufficient
Conditions Possible causes Recommended step
The compression of
the engine is correct
but you do not get
max. speed at full
throttle.
The air filters are dirty. Clean the foam air filter and replace the pa-
per air filter.
The muffler is blocked. Clean the muffler.
The carburetor must be adjusted or the car-
buretor is dirty.
Adjust or clean the carburetor.
The fuel consumption
is low.
The air filters are dirty. Clean the foam air filter and replace the pa-
per air filter.
46 - Troubleshooting 1662 - 003 - 04.11.2021
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