Instruction Manual
Table Of Contents
- STIHL MS 311, 391
- 1 Guide to Using this Manual
- 2 Safety Precautions
- 3 Reactive Forces
- 4 Working Techniques
- 5 Cutting Attachment
- 6 Mounting the Bar and Chain
- 7 Tensioning the Chain
- 8 Checking Chain Tension
- 9 Fuel
- 10 Fueling
- 11 Chain Lubricant
- 12 Filling Chain Oil Tank
- 13 Checking Chain Lubrication
- 14 Chain Brake
- 15 Winter Operation
- 16 Starting / Stopping the Engine
- 17 Operating Instructions
- 18 Oil Quantity Control
- 19 Taking Care of the Guide Bar
- 20 Cleaning the Air Filter
- 21 Adjusting the Carburetor
- 22 Spark Arresting Screen in Muffler
- 23 Spark Plug
- 24 Storing the Machine
- 25 Checking and Replacing the Chain Sprocket
- 26 Maintaining and Sharpening the Saw Chain
- 27 Maintenance and Care
- 28 Main Parts
- 29 Specifications
- 30 Ordering Spare Parts
- 31 Maintenance and Repairs
- 32 Disposal
- 33 EC Declaration of Conformity
Part-time use: every six months
occasional use: annually
15 Winter Operation
15.1 Remove shroud
► Move the Master Control lever to the stop
position 0
► Push the hand guard forwards – the saw chain
is blocked
1
4903BA002 KN
1
1
2
► Loosen screws (1)
► Remove the shroud (2)
15.2 Pre-heat carburetor
15.2.1 At temperatures below +10 °C
1
0001BA002 KN
►
Pull the slide (1) out of the position s (sum‐
mer operation)
0001BA003 KN
►
Place the slide in the position r (winter oper‐
ation) – r facing upwards
► Refit the shroud and tighten the screws
Heated air is now drawn in from around the cylin‐
der and circulates around the carburetor – this
helps prevent carburetor icing.
15.2.2 At temperatures above +20 °C
►
Ensure that the slide is set back to position s
(summer operation) without fail, otherwise the
engine may malfunction due to overheating
15.3 At temperatures below -10 °C
Under extreme winter conditions (temperatures
below -10 °C, powdered or drifting snow), it is
recommended to use the "cover plate mounting
kit" (special accessory).
In case of erratic idling behavior or poor acceler‐
ation
► Turn the low speed screw (L) 1/4 turn counter‐
clockwise
Whenever the low speed screw (L) has been
adjusted, it is usually also necessary to adjust
the idle speed adjusting screw (LA), see "Setting
the carburetor".
► if the chain saw is extremely cold (frost forma‐
tion) – after starting, bring the engine up to
operating temperature at increased idle speed
(disengage chain brake!)
15.4 Cover plate
The cover plate (special accessory) keeps out
powdered or drifting snow.
When the cover plate is used, the slide must be
in the winter position.
If engine trouble occurs, first check whether use
of the cover plate is necessary.
15.4.1 Attach cover plate
2
4903BA004 KN
2
1
► Insert cover plate (1) with both tabs (arrows)
and fasten with the screws (2)
English 15 Winter Operation
22 0458-542-8321-D