18
Problem Possible cause Remedy
The engine cuts out. Incorrect carburettor setting The carburetor can be adjusted by a 
professional.
or
please contact service center.
The engine starts but
delivers very little power.
Incorrect choke lever setting
Air filter dirty
Incorrect carburettor setting
Set it to 
Remove the air filter, clean it with 
soap suds, dry it and then fit it again.
Have the carburettor adjusted by a 
specialist.
The engine does not start or starts but 
then cuts out again.
Incorrect starting procedure
Incorrect carburettor setting
Sooted spark plug
Follow the instructions in “Start when 
the engine is cold”
Have the carburettor adjusted by a 
specialist.
Clean the spark plug, correct the
electrode gap or replace the spark 
plug.
The engine runs unevenly. Incorrect electrode gap on the
spark plug
Burned spark plug
Clean the spark plug, correct the
electrode gap (ideally 0.25”/0.63 mm) 
or replace the spark plug.
Excessive smoke development. Incorrect carburettor setting
Incorrect fuel mixture
Have the carburettor adjusted by a 
specialist.
Empty the tank, and refill it with the 
correct mixture: 2-stroke, ratio 40:1
operation ! This field can interfere with active or passive 
medical implants under certain circumstances!
To reduce the risk of serious or fatal injury , we 
recommend persons with medical implants their 
physician and the manufacturer of the medical implant 
consulted before the instrument is used !
G
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