Stihl MH 445.1 - Reach; Troubleshooting

ENNO
43
SVFIDASLSKTRHUSRHRBGUKETMK
0478 403 9806 B - EN
18.1 REACH
REACH is an EC Directive for the
registration, evaluation, authorisation and
restriction of chemicals.
Information on compliance with the
REACH Directive (EC) No. 1907/2006 is
available from www.stihl.com/reach.
Fault:
Engine does not start
Possible cause:
– Throttle lever in Stop position
– No fuel in tank; fuel line blocked
– Inferior, dirty or old fuel in tank
– Spark plug socket detached from spark
plug; ignition lead not properly fastened
to socket
– Spark plug dirty or damaged; incorrect
electrode gap
– Dirty air filter
– Engine is flooded due to several
starting attempts.
Remedy:
– Set throttle lever to Start position
(Ö 8.1)
– Fill fuel tank (Ö 7.15);
Clean fuel lines (#)
– Use fresh, good quality fuel, unleaded
petrol (Ö 7.15);
clean carburettor (#)
– 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)
19. Troubleshooting
# If necessary, contact a specialist
dealer; STIHL recommends STIHL
specialist dealers.
@ See engine instruction manual.