Maintenance - Stihl RM 248 Instruction Manual

English
► Place the lawn mower on a level surface.
► Detach the grass catcher box.
► Set the cutting height to position 1,
► Unhook the starter handle from the starter
rope guide.
► Detach spark plug socket (1).
► Hold handlebar (2) and loosen star grip
nuts (3).
► Set down handlebar (2) to the rear.
► Open discharge flap (4) and hold it open.
► Upend the lawn mower.
15.2 Cleaning the Lawn Mower
► Stop the engine.
► Allow the lawn mower to cool down.
► Detach the spark plug socket.
► Clean the lawn mower with a damp cloth.
► Clean the ventilation slots with a paintbrush.
► Upend the lawn mower.
► Clean the area around the blade and the blade
with a stick, a soft brush or a damp cloth.

16 Maintenance

16.1 Maintenance Intervals
Maintenance intervals are dependent on the
ambient conditions and the working conditions.
STIHL recommends the following maintenance
intervals:
Engine
► Maintain the engine as described in the engine
instruction manual.
Lawn mower
► Have the lawn mower inspected annually by a
STIHL specialist dealer.
16.2 Removing and Attaching the
Blade
16.2.1 Removing the Blade
► Stop the engine.
► Detach the spark plug socket.
► Upend the lawn mower.
30
11.2.
► Block blade (1) using a piece of wood (4).
► Unscrew screw (2) and remove together with
washer (3).
► Remove blade (1).
► Discard screw (2) and washer (3).
Use a new screw and washer to attach
blade (1).
16.2.2
► Stop the engine.
► Detach the spark plug socket.
► Upend the lawn mower.
► Place new washer (3) on new screw (2).
► Apply Loctite 243 thread locker to the thread
of screw (2).
► Position blade (1) so the raised areas on the
contact area engage in the notches in
blade (1).
► Screw in screw (2) together with washer (3).
► Block blade (1) using a piece of wood (4).
► Tighten screw (2) to 65 Nm.
16.3
Sharpening and balancing the blade correctly
requires a lot of practice.
Attaching the Blade
Sharpening and Balancing the
Blade
16 Maintenance
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