Stihl FC 70, Instruction Manual

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FC 70 C
English
27
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:
Do not resharpen the blade.
N
Replace the blade (1) if its
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:
N
Have your dealer check the blade
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 the protection against wear
N
Before starting up the machine,
check that the protection against
wear (1) is not damaged
N
Replace the protection against wear
at the latest when the gearbox (2)
becomes visible (arrow)
NOTICE
If worn deflectors are not replaced in
time, this can cause serious damage to
the gearbox.
Replacing the protection against wear
N
Remove the blade – see "Fitting the
blade"
N
Unscrew screws (4)
N
Replace the protection against
wear (5)
N
Screw in and tighten screws (4)
N
Fit the blade – see "Fitting the
blade"
Replacing the Cutting Blade
Length Thick
-
ness
Marking
200 mm 2.4 mm 4133 / 01
200 mm 3.8 mm 4133 / 02
A
C
B
239BA026 KN
1
Checking and Replacing the
Wear Guard
2
257BA017 KN
1
4
5
239BA027 KN
4