Stihl KM 90 Instruction Manual page 21

English
: Crank engine until it begins to fire.
After no more than five attempts,
turn the choke knob to e and
continue cranking.
As soon as engine runs
: Blip the throttle trigger so that the
slide control moves to the normal
run position #
and the engine settles down to idle
speed.
Make sure the carburetor is
correctly adjusted – the tool must
not move when the engine is idling.
Your machine is now ready for
operation.
To shut down the engine:
: Push the slide control in the
direction of the arrow on the stop
symbol ( ) to STOP-O.
At very low outside temperatures:
As soon as engine runs:
: Blip the throttle trigger to disengage
the starting throttle positiion –
the slide control moves to the run
position # – and the engine settles
down to idle speed.
: Open the throttle part way and warm
up engine for a brief period.
20
If the engine does not start
If you did not turn the choke knob to e
quickly enough after the engine began to
fire, the combustion chamber has
flooded.
: Turn the choke knob to e.
: Set slide control, interlock lever and
throttle trigger to starting throttle
position.
: Start the engine by pulling the
starter rope firmly. 10 to 20 pulls
may be necessary.
If the engine still does not start:
10
: Push the slide control to STOP-O.
: Pull off the spark plug boot (10).
.
: 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 slide control to START
: Set choke knob to e – even if
engine is cold.
: Now start the engine.
Throttle cable adjustment
: Check adjustment of the throttle
cable – see "Adjusting the Throttle
Cable".
Fuel tank run until dry
: After refueling, press the fuel pump
bulb at least five times – even if
bulb is still filled with fuel.
: Set choke knob according to engine
temperature.
: Now start the engine
KM 90, KM 90 R