Stihl MS 391 Product Instruction Manual - Page 3

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© ANDREAS STIHL AG & Co. KG, 2009 0458-542-8621-A. M12-5.L09.CP. 0000001868_004_GB Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled. Original Instruction Manual Contents Guide to Using this Manual 2 Safety Precautions and Working Techniques 2 Cutting Attachment 23 Mounting the Bar and Chain 23 Tensioning the Chain 24 Checking Chain Tension 24 Fuel 25 Fueling 25 Chain Lubricant 27 Filling Chain Oil Tank 27 Checking Chain Lubrication 28 Chain Brake 28 Winter Operation 29 Starting / Stopping the Engine 30 Operating Instructions 34 Oil Quantity Control 35 Taking Care of the Guide Bar 35 Air Filter System 36 Cleaning the Air Filter 36 Engine Management 37 Adjusting the Carburetor 37 Spark Arresting Screen in Muffler 38 Spark Plug 39 Replacing the Starter Rope and Rewind Spring 40 Storing the Machine 42 Checking and Replacing the Chain Sprocket 43 Maintaining and Sharpening the Saw Chain 44 Maintenance and Care 47 { Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement Trademarks MS 311, MS 391 English 49 Allow only persons who fully understand 51 this Manual to operate your chain saw. 52 To receive maximum performance and 53 satisfaction from your STIHL chain saw, it is important that you read and 53 understand and follow the maintenance and safety precautions in chapter "Safety Precautions and Working 53 Techniques" before using your chain 55 saw. For further information you can go to www.stihlusa.com. Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this manual. Warning! Because a chain saw is a high-speed wood-cutting tool, some special safety precautions must be observed as with any other power saw to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury. STIHL's philosophy is to continually improve all of its products. As a result, engineering changes and improvements may be made from time-to-time. If the operating characteristics or the appearance of your chain saw differs from those described in this manual, please contact your STIHL dealer for information and assistance. 1

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Original Instruction Manual
Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2009
0458-542-8621-A. M12-5.L09.CP.
0000001868_004_GB
MS 311, MS 391
English
1
{
Contents
Allow only persons who fully understand
this Manual to operate your chain saw.
To receive maximum performance and
satisfaction from your STIHL chain saw,
it is important that you read and
understand and follow the maintenance
and safety precautions in chapter
"Safety Precautions and Working
Techniques" before using your chain
saw. For further information you can go
to www.stihlusa.com.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
Warning!
Because a chain saw is a high-speed
wood-cutting tool, some special safety
precautions must be observed as with
any other power saw to reduce the risk
of personal injury.
Careless or improper use may cause
serious or even fatal injury.
STIHL's philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
may be made from time-to-time. If the
operating characteristics or the
appearance of your chain saw differs
from those described in this manual,
please contact your STIHL dealer for
information and assistance.
Guide to Using this Manual
2
Safety Precautions and Working
Techniques
2
Cutting Attachment
23
Mounting the Bar and Chain
23
Tensioning the Chain
24
Checking Chain Tension
24
Fuel
25
Fueling
25
Chain Lubricant
27
Filling Chain Oil Tank
27
Checking Chain Lubrication
28
Chain Brake
28
Winter Operation
29
Starting / Stopping the Engine
30
Operating Instructions
34
Oil Quantity Control
35
Taking Care of the Guide Bar
35
Air Filter System
36
Cleaning the Air Filter
36
Engine Management
37
Adjusting the Carburetor
37
Spark Arresting Screen in Muffler
38
Spark Plug
39
Replacing the Starter Rope and
Rewind Spring
40
Storing the Machine
42
Checking and Replacing the Chain
Sprocket
43
Maintaining and Sharpening the
Saw Chain
44
Maintenance and Care
47
Main Parts
49
Specifications
51
Special Accessories
52
Ordering Spare Parts
53
Maintenance and Repairs
53
STIHL Incorporated Federal
Emission Control Warranty
Statement
53
Trademarks
55