Instruction Manual
BG 56, BG 56 C, BG 66, BG 66 C, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
8
regularly given the opportunity to attend 
training courses and are supplied with 
the necessary technical information.
Only use high-quality replacement parts 
in order to avoid the risk of accidents 
and damage to the machine. If you have 
any questions in this respect, consult a 
servicing dealer.
STIHL recommends the use of genuine 
STIHL replacement parts. They are 
specifically designed to match your 
model and meet your performance 
requirements.
To reduce the risk of injury, always shut 
off the engine before carrying out any 
maintenance or repairs or cleaning the 
machine. – Exception: Carburetor and 
idle speed adjustments.
Do not turn the engine over on the 
starter with the spark plug boot or spark 
plug removed since there is otherwise a 
risk of fire from uncontained sparking.
Do not service or store your machine 
near open flames.
Check the fuel filler cap for leaks at 
regular intervals.
Use only a spark plug of the type 
approved by STIHL and make sure it is 
in good condition – see "Specifications".
Inspect the ignition lead (insulation in 
good condition, secure connection).
Check the condition of the muffler.
To reduce the risk of fire and damage to 
hearing, do not operate your machine if 
the muffler is damaged or missing. 
Do not touch a hot muffler since burn 
injury will result.
Vibration behavior is influenced by the 
condition of the AV elements – check the 
AV elements at regular intervals.
Shut off the engine before rectifying 
problems.
Mounting the Blower Tube
N Line up the arrows (1).
N Position the union nut so that the 
symbol ‚ is in line with the arrows.
N Push the blower tube (2) into the fan 
housing stub (3) as far as stop.
N Push the union nut (4) over the fan 
housing stub as far as stop.
N Rotate the union nut (4) in direction 
of arrow until symbol ƒ is in line 
with the arrows – union nut snaps 
audibly into position.
Assembling the Blower
1
3
296BA016 KN
296BA017 KN










