RMA 410 C
English
19
Blade thickness must not be less than
a = 2.0 mm at any point.
Angle ‘b’ must be 30°.
Blade width at its narrowest point must
be at least c = 39 mm.
Cutting edges may be filed back no
more than d = 15 mm.
Mulching blade
N
Use a caliper gauge to check blade
thickness at a minimum of 5
different points.
N
Place a ruler on the rear edge of the
blade and measure how far it has
been filed back.
Blade thickness must not be less than
a = 2 mm at any point.
Blade width at the cutting edges must be
a minimum of b = 40 mm.
Removing the Cutting Blade
N
Use a suitable piece of wood (2) to
block the cutting blade (1).
N
Unscrew the blade mounting
screw (3) and remove the blade.
N
Check the blade mounting screw for
damage.
WARNING
Replace a damaged mounting screw.
Sharpening Instructions
STIHL recommends that you have the
blade resharpened by your dealer. An
incorrectly ground cutting blade (wrong
sharpening angle, out-of-balance) can
cause running problems – STIHL
recommends a STIHL servicing dealer.
N
Cool the cutting blade during
resharpening, e.g. with water.
N
Sharpen the cutting blade uniformly
to avoid out-of-balance and
vibrations.
N
Sharpen the cutting edges to an
angle of 30°.
N
Use fine emery paper to remove any
burrs from the cutting edges after
resharpening.
Installing the Cutting Blade
N
Clean mounting faces and
thread (1).
N
Fit the cutting blade (2) with the
upturned ends facing up – the
retaining lugs (3) must engage the
holes (4) in the blade.
N
Use a suitable piece of wood (5) to
block the blade.
N
Check the blade mounting screw (6)
for damage.
WARNING
Replace a damaged mounting screw.
N
Insert the blade mounting screw,
tighten it down to a torque of 12 Nm
and secure with Loctite 243 or
Loctite 242.
a
a
0000-GXX-0809-A0
b
b
3
2
0000-GXX-0810-A0 KN
1
0000-GXX-081
1-A0 KN
1
2
3
6
5
0000-GXX-0812-A0 KN
2
3
4
Summary of Contents for RMA 410 C
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