Specifications - Stihl KM 91 R Instruction Manual

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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 exhaust noises 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 Coupling Sleeve
Connects drive tube to lower part of
drive tube (stub shaft).
9 Wing Screw
Secures lower part of the drive tube
(stub shaft).
10 Loop Handle
For easy control of machine during
cutting work.
11 Barrier Bar
Helps keep user's feet and legs
clear of the cutting attachment.
12 Carrying Ring
Connects the unit to the harness.
22
13. Stop Switch
Switches the engine's ignition off
and stops the engine.
14 Throttle Trigger Lockout
Must be depressed before the
throttle trigger can be activated.
15 Throttle Trigger
Controls the speed of the engine.
16 Choke Knob
Eases engine starting by enriching
mixture.
17 Air Filter Cover
Covers and protects the air filter
element.
18 Fuel Tank
For fuel and oil mixture.

Specifications

EPA / CEPA
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category
A = 300 hours
B = 125 hours
C = 50 hours
CARB
The Emission Compliance Period used
on the CARB-Air Index Label indicates
the terms:
Extended = 300 hours
Intermediate = 125 hours
Moderate = 50 hours
Engine
Single cylinder four-stroke engine with
mixture lubrication
KM 91 R
Displacement: 28.4 cc
(1.73 cu.in)
Bore: 38 mm (1.5 in)
Stroke: 25 mm (0.98 in)
KM 91 R