Owner's Manual

MS 311, MS 391
English
40
Install spark plug
N Screw in the spark plug and press
on the spark plug boot
N Refit the shroud and tighten the
screws
Remove shroud
N Move the Master Control lever to the
stop position 0
N Push the hand guard forwards – the
saw chain is blocked
N Loosen screws (1)
N Remove the shroud (2)
Removing the fan housing
N Remove screws (1)
N Push hand guard upward
N Pull the bottom of the fan housing
away from the crankcase and
remove downwards
Warning!
To reduce the risk of fire and burn injury,
use only spark plugs authorized by
STIHL. Always press spark plug boot (2)
snugly onto spark plug terminal (1) of
the proper size. (Note: If terminal has
detachable SAE adapter nut, it must be
attached.) A loose connection between
spark plug boot and ignition wire con-
nector in the boot may create arcing that
could ignite combustible fumes and
cause a fire.
000BA036 TR
1
4903BA008 KN
Replacing the Starter Rope
and Rewind Spring
1
4903BA002 KN
1
1
2
1
1
1
1
4903BA005 KN