Instruction Manual
Table Of Contents
- STIHL MS 261 C-M
- 1 Guide to Using this Manual
- 2 Safety Precautions
- 3 Reactive Forces
- 4 Working Techniques
- 5 Cutting Attachment
- 6 Mounting the Bar and Chain (side chain tensioner)
- 7 Mounting the Bar and Chain (quick chain tensioner)
- 8 Tensioning the Saw Chain (side chain tensioner)
- 9 Tensioning the Saw Chain (quick chain tensioner)
- 10 Checking Chain Tension
- 11 Fuel
- 12 Fueling
- 13 Chain Lubricant
- 14 Filling Chain Oil Tank
- 15 Checking Chain Lubrication
- 16 Chain Brake
- 17 Winter Operation
- 18 Electric Handle Heating
- 19 Starting / Stopping the Engine
- 20 Operating Instructions
- 21 Oil Quantity Control
- 22 Taking Care of the Guide Bar
- 23 Shroud
- 24 Air Filter System
- 25 Cleaning the Air Filter
- 26 M-Tronic
- 27 Spark Arresting Screen in Muffler
- 28 Spark Plug
- 29 Storing the Machine
- 30 Checking and Replacing the Chain Sprocket
- 31 Maintaining and Sharpening the Saw Chain
- 32 Maintenance and Care
- 33 Main Parts
- 34 Specifications
- 35 Ordering Spare Parts
- 36 Maintenance and Repairs
- 37 Disposal
- 38 EC Declaration of Conformity
–
Unfavorable running conditions.
1
000BA045 KN
WARNING
Arcing may occur if the adapter nut (1) is loose
or missing. Working in an easily combustible or
explosive atmosphere may cause a fire or an
explosion. This can result result in serious inju‐
ries or damage to property.
► Use resistor type spark plugs with a properly
tightened adapter nut.
28.3 Installing the spark plug
5902BA016 KN
► Insert the spark plug through the grommet and
screw it in by hand.
► Tighten down the spark plug, fit the boot and
press it down firmly.
► Install the shroud – see "Shroud".
29 Storing the Machine
For periods of 3 months or longer
► Drain and clean the fuel tank in a well ventila‐
ted area.
► Dispose of fuel properly in accordance with
local environmental requirements.
► Run the engine until the carburetor is dry – this
helps prevent the carburetor diaphragms stick‐
ing together.
► Remove the saw chain and guide bar, clean
them and spray with corrosion inhibiting oil.
► Thoroughly clean the machine – pay special
attention to the cylinder fins and air filter.
► If you use a biological chain and bar lubricant,
e.g. STIHL BioPlus, completely fill the chain oil
tank.
► Store the machine in a dry, high or locked
location, out of the reach of children and other
unauthorized persons.
30 Checking and Replacing
the Chain Sprocket
► Remove chain sprocket cover, saw chain and
guide bar.
► Release chain brake – pull hand guard against
the front handle
30.1 Fit new chain sprocket
001BA121 KN
–
after use of two saw chains or earlier
–
if the wear marks (arrows) are deeper than
0.5 mm – otherwise the service life of the saw
chain is reduced – use check gauge (special
accessory) to test
Using two saw chains in alternation helps pre‐
serve the chain sprocket.
STIHL recommends use of original STIHL chain
sprockets in order to ensure optimal functioning
of the chain brake.
29 Storing the Machine English
0458-153-8321-C 33