Stihl FS 50 Service Manual

37Series 4144 Components FC, FS, KM
7. Control Levers
7.1 Switch Shaft / Control
Lever
7.2 Switch Positions
On these machines the operating
modes are set on the handle and
the carburetor:
On the handle
–Position
0 = engine off
– ignition is switched off
(not locked, button automatically
returns to run position)
On the carburetor
The rotary knob returns to the run
position when the throttle trigger is
operated.
–Position
F = normal run position
– Press in the rotary knob – warm
and cold start positions can only
be selected when the knob is
pressed in.
545RA124 TG545RA125 TG
–Position< = warm start
– warm engine is started in this
position.
–Positiong = cold start
– cold engine is started in this
position
7.3 Interlock Lever
(Loop Handle)
– Remove the shroud, b 5.1
– Pull the boot off the spark plug.
– Press down the interlock lever (1)
to disengage it from the throttle
trigger.
: Pull out the support (2).
: Ease the interlock lever (1) out of
its mounts (arrows).
– Turn the interlock lever (1)
slightly and pull it out of the
support.
545RA126 TG
1
2
545RA127 TG
1
: Remove the torsion spring (1).
– Check the interlock lever (2) and
torsion spring (1) and replace if
necessary
– Check the support (1) and
replace if necessary
– If the support (1) has to be
replaced, first remove the stop
switch (2) with short circuit and
ground wires, b 5.9.2
– Check the throttle trigger and
replace or readjust as necessary,
b 7.3.1
545RA128 TG
2
1
545RA129 TG
2
1

Stihl FS 50 Specifications

General

Engine Displacement	27.2 cc
Power Output	0.8 kW
Engine Type	2-stroke
Shaft Type	Straight
Starter System	Recoil
Overall Length	147 cm
Vibration Level	4.5 m/s²