Stihl MH 600 Instruction Manual page 76

– Dirty or damaged spark plug; incorrect
electrode gap
– Dirty oil bath air filter
– Engine flooded due to several starting
attempts
Remedy:
– Set On/Off switch to On position (
– Fill fuel tank ( 7.14);
Clean fuel lines ( )
– Use fresh, good quality fuel (unleaded
petrol) ( 7.14);
Clean carburettor ( )
– Connect spark plug socket (
Check connection between ignition lead
and socket ( )
– Clean/replace spark plug (
Adjust electrode gap ( )
– Clean/replace oil bath air filter (
– Remove spark plug and dry, set On/Off
switch to Off 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
– Oil bath air filter dirty
– Spark plug dirty
– Incorrect fuel used
Remedy:
– Empty fuel tank, clean fuel line and
carburettor ( )
– Clean fuel tank ( )
– Clean/replace oil bath air filter (
– Clean/replace spark plug (
– Check fuel ( )
74
Fault:
Engine overheating
Possible cause:
– Dirty cooling ribs
– Oil level in engine too low
8.1)
– Surface of engine covered with earth
– Excessively high speed
Remedy:
– Clean cooling ribs (
– Top up engine oil (
– Remove earth from engine
);
– Reduce speed (
), ( );
Fault:
Engine running roughly
), ( )
Possible cause:
– Oil bath air filter dirty
– Incorrect fuel used
– Insufficient fuel in tank
Remedy:
– Clean/replace oil bath air filter (
– Check fuel (
Fault:
Heavy smoke formation
Possible cause:
– Oil level too high
– Oil bath air filter dirty
– Angle of machine inclination over 15°
Remedy:
– Adapt oil quantity (
– Clean/replace oil bath air filter (
– Place machine in horizontal cleaning
position
), ( )
), ( )
12.2)
7.14)
8.2)
), ( )
),
)
), ( )
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
– Worn drive belt
Remedy:
– Install hoes correctly (
– Replace hoes ( )
– Adjust brake spur ( 11.5)
– Replace drive belt ( )
Fault:
Loud gearbox noise
Possible cause:
– Incorrect oil level in gearbox
– Worn components in gearbox
Remedy:
– Check oil level in gearbox ( )
– Contact your specialist dealer (
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 ( )
0478 404 9602 A - EN
7.2), ( 7.3)
)