Stihl MS 661 Instruction Manual

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2013 0458-758-0121-A. VA1.K13. 0000006332_006_GB
MS 661
English
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This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
Contents
Dear Customer,
Thank you for choosing a quality
engineered STIHL product.
It has been built using modern
production techniques and
comprehensive quality assurance.
Every effort has been made to ensure
your satisfaction and troublefree use of
the product.
Please contact your dealer or our sales
company if you have any queries
concerning this product.
Your
Dr. Nikolas Stihl
Guide to Using this Manual 2
Safety Precautions 3
Reactive Forces 8
Working Techniques 9
Cutting Attachment 18
Mounting the Bar and Chain 19
Tensioning the Chain 20
Checking Chain Tension 20
Fuel 20
Fueling 22
Chain Lubricant 23
Filling Chain Oil Tank 24
Checking Chain Lubrication 24
Chain Brake 25
Winter Operation 26
Starting / Stopping the Engine 27
Operating Instructions 30
Oil Quantity Control 31
Taking Care of the Guide Bar 32
Remove air filter 32
Cleaning the Air Filter 33
Adjusting the Carburetor 33
Spark Plug 34
Rewind Starter 35
Storing the Machine 35
Checking and Replacing the Chain
Sprocket 36
Maintaining and Sharpening the
Saw Chain 37
Maintenance and Care 41
Minimize Wear and Avoid Damage 43
Main Parts 44
Specifications 45
Special Accessories 46
Ordering Spare Parts 46
Maintenance and Repairs 47
Disposal 47
EC Declaration of Conformity 47

Stihl MS 661 Specifications

General

Displacement	91.1 cc
Chain Pitch	3/8"
Engine Power	5.4 kW
Fuel Capacity	825 ml
Chain Oil Capacity	360 ml
Guide Bar Lengths	90 cm