Maintenance; Repairing - Stihl RMA 248.3 T Instruction Manual

17 Maintenance

► Clean the lawn mower with a damp cloth.
► Clean the discharge chute with a soft brush or
a damp cloth.
► Remove any foreign bodies from the battery
compartment and clean the battery compart‐
ment with a damp cloth.
► Clean the electrical contacts in the battery
compartment with a paintbrush or a soft brush.
► 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.
NOTICE
■ Using a high-pressure cleaner or a water jet
for cleaning can damage the machine.
► Do not clean the machine with a high-pres‐
sure cleaner or a water jet.
16.3 Cleaning the Battery
► Clean the battery with a damp cloth.
16.4 Cleaning the Charger
► Disconnect the mains plug from the power
supply.
► Clean the charger with a damp cloth.
► Clean vents with a paintbrush.
► Clean the charger's electrical contacts with a
paintbrush or a soft brush.
17 Maintenance
17.1 Removing and Attaching the
Blade
17.1.1 Removing the Blade
► Switch the lawn mower off and remove the
battery.
► Upend the lawn mower.
► Block blade (1) using a piece of wood (2).
► Unscrew the screw with washer (3) in the
direction of the arrow and remove.
► Remove blade (1).
► Dispose of the screw with washer (3).
Use a new screw with washer to fit the blade
(1).
0478-131-9605-B
17.1.2 Attaching the Blade
► Switch the lawn mower off and remove the
battery.
► Upend the lawn mower.
► Apply Loctite 243 threadlocker to the thread of
the screw with washer (1).
► Position blade (2) so that the raised areas on
the contact area engage in the notches.
► Screw in the screw with washer (1).
► Block blade (2) using a piece of wood (3).
► Tighten screw with washer (1) to 60 Nm.
17.2 Sharpening and Balancing the
Blade
Sharpening and balancing the blade correctly
requires a lot of practice.
STIHL recommends having the blade sharpened
and balanced by a STIHL specialist dealer.
The current addresses of the specialist dealers
can be found under the respective STIHL country
representative at www.stihl.com.
WARNING
■ The cutting edges of the blade are sharp. This
may result in the user cutting themselves.
► Wear protective gloves.
► Switch the lawn mower off and remove the
battery.
► Upend the lawn mower.
► Remove the blade.
► Sharpen the blade. Observe the sharpening
angle and cool the blade,
Bluing of the blade during sharpening is not
permitted.
► Attach the blade.
► If anything is unclear: consult a STIHL special‐
ist dealer.

18 Repairing

18.1 Repairing the Lawn Mower
The user should not repair the lawn mower or
blade themselves.
English
20.2.
51