Owner's Manual

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2011 0458-178-8621-B. M3-5.D11.FST. 0000001844_004_GB
MS 650, MS 660
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, 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 24
Tensioning the Chain 25
Checking Chain Tension 25
Fuel 26
Fueling 27
Chain Lubricant 27
Filling Chain Oil Tank 28
Checking Chain Lubrication 28
Chain Brake 29
Winter Operation 30
Electric Handle Heating 30
Starting / Stopping the Engine 31
Operating Instructions 34
Oil Quantity Control 35
Taking Care of the Guide Bar 36
Air Filter System 36
Remove air filter 37
Cleaning the Air Filter 37
Engine Management 38
Adjusting the Carburetor 39
Spark Arresting Screen in Muffler 40
Spark Plug 41
Replacing the Starter Rope and
Rewind Spring 42
Storing the Machine 43
Checking and Replacing the Chain
Sprocket 44
Maintaining and Sharpening the
Saw Chain 45
Maintenance and Care 48
Main Parts 50
Specifications 52
Special Accessories 53
Ordering Spare Parts 53
Maintenance and Repairs 54
STIHL Incorporated Federal
Emission Control Warranty
Statement 54
Trademarks 56
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.