Stihl FS 120 User Manual

41FS 120, FS 120 R, FS 200, FS 200 R, FS 250, FS 250 R
English / USA
To reduce the risk of fire and burn
injury, use only spark plugs
authorized by STIHL. Always press
spark plug boot (2) snugly onto
terminal (1) of the proper size.
(Note: If terminal has detachable
SAE adapter nut, it must be
attached.) A loose connection
between spark plug boot and
ignition wire connector in the boot
may create arcing that could ignite
combustible fumes and cause a fire.
If engine running behavior is
unsatisfactory even though the air filter
is clean and the carburetor and throttle
cable are properly adjusted, the cause
may be in the muffler.
Have your STIHL dealer inspect the
muffler for carbonization.
STIHL recommends that maintenance
and repair work be carried out only by
authorized STIHL dealers.
: Check grease level regularly - about
every 25 hours of operation.
: Unscrew the filler plug (1).
: If no grease can be seen on the
inside of the filler plug, screw the
tube (2) of STIHL gear lubricant for
brushcutters - see “Special
Accessories” - into the filler hole.
: Squeeze up to 1/5 oz (5 g) grease
into the gear housing.
Do not completely fill the gear
housing with grease.
: Refit the filler plug and tighten it
down firmly.
1
2
002BA071 KN
Engine Running Behavior Lubricating the
Gearbox
1
233BA010 KN
2

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