Operating Instructions; Cleaning The Air Filter - Stihl KM 55 Instruction Manual

: Unscrew and dry off the spark plug.
: Open the throttle wide.
: Crank the engine several times with
the starter to clear the combustion
chamber.
: Refit the spark plug and connect the
spark plug boot – push it down
firmly.
: Set the stop switch or slide control
to I / #
: Set choke lever to e, even if the
engine is cold.
: Now start the engine.
Fuel tank run until dry
: After refueling, press the fuel pump
bulb at least five times – even if bulb
is filled with fuel.
: Adjust choke lever to suit engine
temperature.
: Now start the engine.
KM 55

Operating Instructions

During break-in period
A factory new machine should not be run
at high revs (full throttle off load) for the
first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During operation
After a long period of full-throttle
operation, allow engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After finishing work
Wait for engine to cool down. Drain the
fuel tank. Store the machine in a dry
place. Check tightness of nuts and
screws (not adjusting screws) at regular
intervals and retighten as necessary.
English / USA

Cleaning the Air Filter

2
1
Dirty air filters reduce engine power
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of engine
power
Set choke lever to g
:
: Press in the tab (1) and swing the
filter cover (2) open.
: Clean away loose dirt from around
the filter.
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