Stihl FS 91 Instruction Manual page 49

Definitions
1 Fuel Filler Cap
For closing the fuel tank.
2 Carburetor Adjusting Screws
For tuning the carburetor.
3 Starter Grip
The grip of the pull starter, for
starting the engine.
4 Manual Fuel Pump
Provides additional fuel feed for a
cold start.
5 Cover
Covers and protects the spark plug.
6 Muffler with Spark Arresting Screen
Muffler reduces engine exhaust
noise and diverts exhaust gases
away from operator.
Spark arresting screen is designed
to reduce the risk of fire.
7 Machine Support
For resting machine on the ground.
8 Throttle Trigger
Controls the speed of the engine.
9. Stop Switch
Switches the engine's ignition off
and stops the engine.
10 Throttle Trigger Lockout
Must be depressed before the
throttle trigger can be activated.
11 Bike Handle
For easy control of the machine with
both hands during cutting work.
12 Handle Support
Connects the shaft and bike handle.
FS 91, FS 91 R
13 Wing Screw
Locks handlebar in selected
position.
14 Throttle Cable Retainer
Secures the throttle cable to the
drive tube.
15 Carrying Ring
Connects the trimmer/brushcutter to
the harness.
16 Choke Knob
Eases engine starting by enriching
mixture.
17 Air Filter Cover
Encloses and protects the air filter
element.
18 Fuel Tank
For fuel and oil mixture.
19 Loop Handle
For easy control of machine during
cutting work.
20 Barrier Bar
Helps keep user's feet and legs
clear of the cutting tool.
21 Drive Tube
Encloses and protects the drive
shaft beween the engine and the
gearbox.
English
47