Stihl FS 90 User Manual

38
English / USA
FS 90, FS 90 R
: Pull the starter grip slowly with your
right hand until you feel it engage
and then give it a brisk strong pull.
Do not pull out the starter rope to full
length – it might otherwise break.
: Do not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
: Crank engine until it begins to fire.
After no more than five attempts,
turn the choke knob to e
: continue cranking.
When the engine begins to fire:
: 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 cutting tool
must not rotate when the engine is
idling.
Your machine is now ready for
operation.
Stopping the engine
: Move the slide control in direction of
arrow (h) to STOP-O.
At very low outside temperatures
As soon as engine runs:
: Blip the throttle trigger to disengage
the starting throttle position. The
slide control moves to the normal
run position #
and the engine settles down to idle
speed.
: Open the throttle slightly.
: Warm up engine for brief period.
If the engine does not start
Choke knob
If you did not turn the choke knob to e
quickly enough after the engine began to
fire, the combustion chamber has
flooded.
: Turn choke knob to e
: Select 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:
: Move the slide control to STOP-O.
: Pull off the spark plug boot (10).
10
249BA008 KN

Stihl FS 90 Specifications

General

Engine Displacement	28.4 cc
Fuel Type	Gasoline
Handle Type	Loop handle
Shaft Type	Straight
Fuel Capacity	0.53 l
Weight	5.8 kg
Cutting Attachment	Autocut 25-2
Engine Power	0.95 kW (1.27 bhp)