Replacing The Cutting Blade; Checking And Replacing The Wear Guard - Stihl FC 91 Manual De Instrucciones

English
Fitting the skirt
1 2
6
3
In order to push the skirt easily into
N
the gap on the deflector, apply a thin
coating of resin-free oil to the top of
the skirt
Thread the skirt (3) into the
N
segment (6) and push into the
gap (5) of the deflector – the bore in
the skirt must be fixed in the
arbor (4)
Place washer (2) onto screw (1).
N
Insert and tighten the screw (1)
N
26

Replacing the Cutting Blade

1
A
5
B
C
4
Do not attempt to straighten or weld a
bent or cracked blade – it may break – it
must be replaced – see "Mounting the
Cutting Blade".
STIHL recommends you use only the
following original STIHL cutting blades:
Length Thick -
ness
200 mm 2.4 mm
200 mm 3.8 mm
Do not resharpen the blade.
Replace the blade (1) if its
N
length (A) is no longer sufficient to
maintain the necessary ground
clearance (B) and obtain the
required depth of cut (C).
Checking Out-of-Balance
To avoid out-of-balance:
Have your dealer check the blade
N
for out-of-balance on a STIHL
balancer (special accessory) –
STIHL recommends an authorized
STIHL servicing dealer. If blade is
out-of-balance, fit a new one – see
"Mounting the Cutting Blade".
Checking and Replacing the
Wear Guard
Checking the protection against wear
N
N
Marking
4133 / 01
4133 / 02 NOTICE
If worn deflectors are not replaced in
time, this can cause serious damage to
the gearbox.
1
2
Before starting up the machine,
check that the protection against
wear (1) is not damaged
Replace the protection against wear
at the latest when the gearbox (2)
becomes visible (arrow)
FC 91