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Stihl FS 90 User Manual

Stihl FS 90
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43FS 90, FS 90 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.
: 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.
Replacing the starter rope
: Move slide control in direction of
c – arrow to STOP-O.
: Take out the screws (1).
: Lift the starter cover (2) off the
housing.
1
2
002BA071 KN
Lubricating the
Gearbox
1
233BA010 KN
2
Replacing Starter Rope
and Rewind Spring
1
1
249BA061 KN
2
1

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Stihl FS 90 Specifications

General IconGeneral
Engine Displacement28.4 cc
Fuel TypeGasoline
Handle TypeLoop handle
Shaft TypeStraight
Fuel Capacity0.53 l
Weight5.8 kg
Cutting AttachmentAutocut 25-2
Engine Power0.95 kW (1.27 bhp)

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