Stihl RT 4097 S, Instruction Manual, Page: 38 / 310

0478 192 9810 A - EN
36
● Observe the wear limits when
sharpening.
Checking the balance of the mowing
blades:
Insert a screwdriver (1) through the central
bore.
When mowing blade (2) is properly
balanced, it must balance in the position
illustrated.
Installing the mowing blade:
The following points must be observed
when attaching the mowing blades:
● Install the mowing blade with the curved
edges/vanes pointing upwards
(towards the mowing deck).
Attach mowing blade (1), screw in blade
fastening screw (2 – apply
Loctite 243 )
with retaining washer (3 – observe
convexity) and tighten.
Tightening torque: 65 - 70 Nm
14.7 Checking the installation position
of the mowing deck
Maintenance interval:
Every 50 operating hours or as required
(e.g. following severe impacts to the
mowing deck or a poor cut).
The mowing deck is in the correct
installation position when it is tilted slightly
forwards – the front of the mowing deck is
slightly lower than the rear.
● Park the machine on level ground.
● Stop the engine. (
Ö
12.3)
● Engage the parking brake. ( Ö 8.12)
● Remove the ignition key and keep it in a
safe place.
● Select the lowest cutting level. ( Ö 8.13)
Difference in height A = 10 mm
Risk of injury!
If the mowing blade does not
balance, the procedure
"Sharpening the mowing blade"
must be repeated until the blade is
balanced.
The mowing blade may only be
balanced by means of sharpening
back the cutting edges.
Risk of injury!
Before installing, check the mowing
blade for damage (notches or
cracks) and wear.
Worn or damaged mowing blades
must be replaced.
Replace the
retaining washer
each time the blade is installed.
Additionally secure the
blade
fastening screw with Loctite 243
and observe the specified
tightening torque, as the secure
attachment of the cutting tool
depends on this.
Uniform tyre pressure is a
prerequisite for checking the
correct installation position.
Therefore check the tyre pressure
of all the tyres and adjust if
necessary before checking the
installation position. (
Ö 14.9)