16.3
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.
WARNING
■ The cutting edges of the blade are sharp. This
may result in the user cutting themselves.
► Wear work gloves made from resistant
material.
► Stop the engine.
► Detach the spark plug socket.
► Upend the lawn mower.
► Remove the blade.
► Sharpen the blade. Observe the sharpening
angle and cool the blade, 19.2.
Bluing of the blade during sharpening is not
permitted.
► Attach the blade.
► If anything is unclear: consult a STIHL special‐
ist dealer.
17 Repairing
17.1
Repairing the Lawn Mower
The user should not repair the lawn mower or
blade themselves.
► If the lawn mower or blade is damaged: do not
use the lawn mower or blade and consult a
STIHL specialist dealer.
► If warning signs are illegible or damaged: have
the warning signs replaced by a STIHL spe‐
cialist dealer.
18 Troubleshooting
18.1
Remedying Lawn Mower Faults
Fault
Cause
Remedy
Engine cannot
be started.
Control bar for mowing is not
pressed.
► Start engine as described in this instruction
manual.
Fuel tank is empty.
► Refuel lawn mower.
Fuel line is blocked.
► Consult a STIHL specialist dealer.
Inferior, dirty or old fuel in the
tank.
► Use fresh, good-quality unleaded petrol.
Air filter is dirty.
► Consult a STIHL specialist dealer.
Spark plug socket is detached
from spark plug or ignition lead
is not properly fastened to
socket.
► Connect spark plug socket.
► Check connection between ignition lead and plug.
Spark plug is dirty, damaged or
electrode gap is incorrect.
► Clean or replace spark plug.
► Adjust electrode gap.
Resistance at the blade is too
great.
► Set a higher cutting height.
► Start engine in lower grass.
Engine diffi‐
cult to start or
engine power
deteriorating.
Lawn mower housing is
blocked.
Clean lawn mower.
Cutting height is set too low or
rate of feed is too high.
Adapt cutting height or mow more slowly.
Water in fuel tank and carburet‐
tor or carburettor is blocked.
Empty fuel tank, clean fuel line and carburettor.
Fuel tank is contaminated.
Consult a STIHL specialist dealer.
Air filter is dirty.
Consult a STIHL specialist dealer.
Spark plug is dirty.
Clean or replace spark plug.
Engine over‐
heating.
Engine oil level is too low.
Add or change engine oil as described in the engine
instruction manual.
Cooling ribs are dirty.
Clean lawn mower.
17 Repairing
English
0478-111-9945-A
29
Summary of Contents for RM 2.0 RT
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