Sharpening Instructions - Stihl RMA 510 Instruction Manual

English
Cleaning the Machine
Put the mower in the cleaning
N
position.
Clean the cutting blade
N
Use a brush and water to clean the
N
underside of the mower after
loosening stubborn grass residue
from the housing and discharge
chute with a stick.
Clean dirt from cooling air duct
N
between motor hood and housing
base.
If dirt cannot be removed with water,
brush or cloth, STIHL recommends you
use a special cleaner (e.g. STIHL
special cleaner).
20

Sharpening Instructions

The type of blade initially supplied with
the mower depends on the market.
Checking the Blade
Put the mower in the cleaning
N
position.
Clean the cutting blade and inspect
N
it for damage (nicks or cracks) and
wear, replace if necessary.
Always check the mounting screw (1)
and washer (2) when replacing the
cutting blade.
WARNING
Replace a damaged mounting screw
and washer.
Use a caliper gauge to check blade
N
thickness at a minimum of 5
different points.
Place a ruler on the front edge of the
N
blade and measure how far it has
been filed back.
Blade thickness must not be less than
a = 2 mm at any point.
2
1
Angle 'b' must be 30°.
Blade width at its narrowest point must
be at least c = 45 mm.
Removing the Cutting Blade
Use a suitable piece of wood (2) to
N
block the cutting blade (1).
Take out the mounting screw (3)
N
and remove the washer (4).
Check the blade mounting screw (3)
N
and washer (4) for damage.
Remove the cutting blade (1).
N
c
a
b
1
4
3
2
RMA 510