Stihl RT 4112.1 SZ Gebrauchsanleitung Seite 71

15 Maintenance
► Screw in the new headlight lamp.
The headlight lamp is fixed securely into the
socket.
► Press the socket (1) into the headlight hous‐
ing (3).
► Close the engine hood,
15.9 Removing and Attaching the
Blade
15.9.1 Removing the blades
► Place the ride-on mower on a level surface.
► Shut off the engine,
► Engage the parking brake,
► Remove the ignition key and store it securely.
► Detach the mowing deck,
► Lean the mowing deck (1) against a wall and
secure it against slipping.
► Block the blades (2) with a piece of wood (3).
► Take out the screw (4) and remove it with the
washer (5).
► Remove the blade (2).
► Dispose of the screw (4) and the washer (5).
Use a new screw and a new washer to install
the blades.
15.9.2 Installing the blades
► Place the ride-on mower on a level surface.
► Shut off the engine,
► Engage the parking brake,
► Remove the ignition key and store it securely.
► Detach the mowing deck,
0478-192-9616-A
15.2.2.
9.2.
11.5.1.
6.2.2.
9.2.
11.5.1.
6.2.2.
► Remove the blades,
► Insert the screw (1) through the washer (2).
► Apply Loctite 243 threadlocking to the thread
of the screw (1).
► Place the blades (3) with their upwardly bent
wings pointing toward the mowing deck so that
the raised areas on the contact surface
engage in the recesses on the blade (3).
► Screw in the screw (1) together with the
washer (2).
► Block the blades (3) with a piece of wood.
► Tighten the screw (1) to a torque of 65–70 Nm.
The blade is correctly installed.
► Repeat the same procedure with the second
blade.
15.10 Sharpening and balancing the
cutting blade
Sharpening and balancing the blades correctly
requires a lot of practice.
STIHL recommends having the blades sharp‐
ened and balanced by a STIHL authorized
dealer.
The current addresses of authorized dealers can
be found under the respective STIHL country
representative at www.stihl.com.
WARNING
■ The cutting edges of the blades are sharp.
There is a risk of cutting oneself.
► Wear protective gloves made of resistant
material.
► Place the ride-on mower on a level surface.
► Shut off the engine,
► Engage the parking brake,
► Remove the ignition key and store it securely.
► Detach the mowing deck,
► Remove the blades,
► Sharpen the blades. In doing so, note the
sharpening angle and cool the blades.
The blades must not turn blue during sharpen‐
ing.
► Check the blades,
► Install the blades,
English
15.9.1.
9.2.
11.5.1.
6.2.2.
15.9.1.
10.5.
15.9.2.
71