Stihl MS 231 Instruction Manual

MS 231, MS 231 C, MS 251, MS 251 C
English
2
This Instruction Manual refers to a
STIHL chain saw, also called a machine
in this Instruction Manual.
Pictograms
Pictograms that appear on the machine
are explained in this Instruction Manual.
Depending on the machine and
equipment version, the following
pictograms may appear on the machine.
Symbols in text
WARNING
Warning where there is a risk of an
accident or personal injury or serious
damage to property.
NOTICE
Caution where there is a risk of
damaging the machine or its individual
components.
Engineering improvements
STIHL's philosophy is to continually
improve all of its products. For this
reason we may modify the design,
engineering and appearance of our
products periodically.
Therefore, some changes, modifications
and improvements may not be covered
in this manual.
Guide to Using this Manual
Fuel tank; fuel mixture of
gasoline and engine oil
Tank for chain oil; chain
oil
Engage and release
chain brake
Coasting brake
Direction of chain travel
Ematic; chain oil flow
adjustment
Tension saw chain
Intake air baffle: winter
operation
Intake air baffle: summer
operation
Handle heating
Actuate decompression
valve
Actuate manual fuel
pump

Stihl MS 231 Specifications

General

Power-to-Weight Ratio	2.4 kg/kW
Oilomatic Chain Pitch	3/8" P
Sound Pressure Level	103 dB(A)
Sound Power Level	114 dB(A)
Engine Power	2.0 kW
Weight	4.8 kg
Bar Length	35 cm / 40 cm
Fuel Capacity	390 cc
Chain Oil Capacity	200 ml
Vibration Level Left/Right	3.0/3.0 m/s²