0478 403 9802 B - EN
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– Connect spark plug socket ();
check connection between ignition lead
and socket (#)
– Clean/replace spark plug (), (#);
Adjust electrode gap (#)
– Clean/replace air filter (#)
– Remove spark plug and dry, set throttle
lever to Stop position and pull recoil
starter rope repeatedly with the spark
plug removed ()
Fault:
Starting problems or deteriorating engine
power
Possible cause:
– Water in fuel tank and carburettor;
carburettor blocked
– Contaminated fuel tank
– Dirty air filter
– Dirty spark plug
Remedy:
– Empty fuel tank, clean fuel line and
carburettor (#)
– Clean fuel tank (#)
– Clean/replace air filter (), (#)
– Clean/replace spark plug (), (#)
Fault:
Engine overheating
Possible cause:
– Dirty cooling ribs
– Oil level in engine too low
– Surface of engine covered with earth
Remedy:
– Clean cooling ribs (Ö 12.2)
– Top up engine oil (Ö 7.15)
– Remove earth from the engine
Fault:
Engine running roughly
Possible cause:
– Dirty air filter
Remedy:
– Clean/replace air filter (), (#)
Fault:
Heavy smoke formation
Possible cause:
– Oil level is too high
– Dirty air filter
Remedy:
– Adapt oil quantity ()
– Clean/replace air filter (), (#)
Fault:
Excessive vibration during operation
Possible cause:
– Loose engine mounting
Remedy:
– Tighten engine mounting bolts (#)
Fault:
Reduced tilling performance
Possible cause:
– Hoes incorrectly mounted
– Worn hoes
– Brake spur incorrectly adjusted
Remedy:
– Mount hoes correctly (Ö 7.7), (Ö 7.8)
– Replace hoes (#)
– Adjust brake spur (Ö 11.5)
Fault:
No tilling performance
Possible cause:
– No folding retainer in drive shaft
Remedy:
– Check attachment of hoes to drive shaft
(Ö 7.7), (Ö 7.8)
Fault:
Loud gearbox noise
Possible cause:
– Incorrect gearbox oil level
Remedy:
– Check gearbox oil level (#)
Fault:
Drive shaft does not rotate when self-
propulsion lever is actuated
Possible cause:
– Cable defective
– Worn drive belt
Remedy:
– Check/replace cable (#)
– Replace drive belt (#)
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