Stihl FS 91 User Manual

FS 91, FS 91 R
English
37
Circular Saw Blades
N Disconnect wire rod from the
transport guard.
N Swing wire rod outwards.
N Fit transport guard on saw blade
from below, making sure the limit
stop is properly seated in the
recess.
N Swing wire rod into position.
N Hook wire rod to the transport
guard.
During break-in period
A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service periods – see "Storing the
Machine".
681BA302 KN
681BA275 KN
1.
2.
681BA276 KN
681BA277 KN
2.
Operating Instructions

Stihl FS 91 Specifications

General

Brand	Stihl
Model	FS 91
Category	Trimmer
Language	English