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
27 Spark Arresting Screen in
Muffler
WARNING
To reduce the risk of fire caused by hot particles
escaping from the machine, never operate the
machine without a spark arresting screen, or with
the spark arresting screen damaged. Do not
modify the muffler or spark arresting screen. To
reduce the risk of fire from accumulated debris
such as pine needles, branches or leaves,
ensure that the muffler plugs are in place before
taking up work.
NOTICE
According to the law or regulations in some
countries or federal states, certain operations
may only be carried out if a properly serviced
spark arresting screen is provided.
► If the engine is down on power, check the
spark arresting screen in the muffler
► Wait for the muffler to cool down
0001BA009 KN
2
1
► Undo screw (1)
► Pull out the spark arresting screen (2)
► Clean the dirty spark arresting screen, replace
if damaged or heavily carbonized
► Refit the spark arresting screen
► Insert the screw
► If the muffler plugs are missing or damaged,
mount new plugs
28 Spark Plug
► If the engine is down on power, difficult to start
or runs poorly at idle speed, first check the
spark plug.
► Fit a new spark plug after about 100 operating
hours – or sooner if the electrodes are badly
eroded. Install only suppressed spark plugs of
the type approved by STIHL – see "Specifica‐
tions".
28.1 Removing the Spark Plug
► Remove the shroud – see "Shroud".
5902BA013 KN
► Pull off the spark plug boot.
► Clean away loose dirt from around the spark
plug.
5902BA014 KN
1
► Insert the combination wrench through the
grommet (1) and turn it as necessary to
engage the spark plug's hexagon.
► Push the combination fully home against the
cylinder.
► Unscrew the spark plug.
28.2 Checking the Spark Plug
000BA039 KN
A
► Clean dirty spark plug.
► Check electrode gap (A) and readjust if neces‐
sary – see "Specifications".
► Rectify the problems which have caused foul‐
ing of the spark plug.
Possible causes are:
–
Too much oil in fuel mix.
–
Dirty air filter.
English 27 Spark Arresting Screen in Muffler
32 0458-153-8321-C