User's Manual

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2011 0458-207-8621-A. M50.E11.CP. 0000000367_003_GB
MS 170, MS 170 C, MS 180, MS 180 C
English
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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, understand
and follow the safety precautions and
the operating and maintenance
instructions 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.
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 3
Cutting Attachment 24
Mounting the Bar and Chain (front
chain tensioner) 24
Mounting the Bar and Chain (quick
chain tensioner) 25
Tensioning the Saw Chain (front
chain tensioner) 27
Tensioning the Saw Chain (quick
chain tensioner) 27
Checking Chain Tension 28
Fuel 28
Fueling 29
Chain Lubricant 30
Filling Chain Oil Tank 30
Checking Chain Lubrication 31
Chain Brake 31
Starting / Stopping the Engine 32
Operating Instructions 36
Taking Care of the Guide Bar 37
Shroud 37
Cleaning the Air Filter 38
Engine Management 38
Adjusting the Carburetor 38
Spark Arresting Screen in Muffler 39
Spark Plug 39
Starter rope 40
Storing the Machine 41
Checking and Replacing the Chain
Sprocket 41
Maintaining and Sharpening the
Saw Chain 42
Maintenance and Care 46
Main Parts 48
Specifications 50
Special Accessories 51
Ordering Spare Parts 52
Maintenance and Repairs 52
STIHL Incorporated Federal
Emission Control Warranty
Statement 53
STIHL Incorporated California
Exhaust and Evaporative
Emissions Control Warranty
Statement 55
Trademarks 57
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.