Stihl FS 120 Service Manual


Remove the flywheel - see 5.4.

Remove the piston - see 4.5.1.
•
Take out the screws.
•
Place extension (1) 4116 894
1000 on crankshaft stub at clutch
side of crankcase.
•
Back off spindle (left-hand
thread) of ZS installing tool (1)
5910 890 2220 a little.
•
Hold ZS installing tool against
clutch side of crankcase so that
the notch marked "16" is at the
bottom.
•
Insert M6x20 screws (2) in holes
marked "17" and tighten them
down against the drilled plate.
Note: ZS installing tools without
holes "16", "17" and "18" and
notches "16" and "17" can be
modified as shown in the
illustration.
Holes "16" and "18" are needed at
the starter side of the crankcase.
The illustration shows the under-
side of the drilled plate.
250RA056
VA
250RA062
1
VA
17
250RA063
2
17
16
2
1
VA
41.25
33.85
9.7
26.85
2.25
250RA219
17.3
33.3
38.0
33.6
20.6
32.25
22.5
41.6
25.5
33.7
20.1
17.65
12.6
24.75
17
19.9
18
16
18
16
16
17
18
16
18
17
16
1
2.5
15.5
16 + 18 = 5,5
17 = 6,5
VA
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Stihl FS 120 Specifications

General

Power source	Gasoline
Type	Brush cutter
Cordless	Yes
Head type	Nylon line
Handle type	U-type handle
Engine power	1.8 hp
Product color	Black, Metallic, Orange
Uncertainty K	2 m/s²
Sound power level	110 dB
Fuel tank capacity	0.64 L
Vibration emission	4.9 m/s²
Engine displacement	30.8 cm³
Sound pressure level	98 dB
Cutting diameter (max)	- mm

Weight and Dimensions

Length	1760 mm
Weight	6300 g