Storing The Machine; Checking And Replacing The Chain Sprocket - Stihl MS 311 Instruction Manual

English
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.
24.3 Install spark plug
► Screw in the spark plug and press on the
spark plug boot
► Refit the shroud and tighten the screws

25 Storing the Machine

For periods of about 30 days or longer
► Drain and clean the fuel tank in a well-ventila‐
ted area.
► Dispose of fuel properly in accordance with
local environmental requirements.
► If a manual fuel pump is fitted: Press the man‐
ual fuel pump at least 5 times.
► Start the engine and run it at idling speed until
it stops.
► Remove saw chain and guide bar; clean and
spray with protective oil
► Thoroughly clean the machine - pay special
attention to the cylinder fins and air filter
► When using biological chain oil (e.g. STIHL
BioPlus), fill the lubricant oil tank
► Store the machine in a dry and secure location
Keep out of the reach of children and other
unauthorized persons
26 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
26.1 Fit new chain sprocket
– 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.
5
4
► Use a screwdriver to remove the E-clip (1)
► Remove the washer (2)
► Remove rim sprocket (3)
► Inspect transport profile on the clutch drum (4)
– if there are also heavy signs of wear, also
replace the clutch drum
25 Storing the Machine
6
2
1
3
6
2
1
0458-542-8221-D