Instruction Manual

MS 231, MS 231 C, MS 251, MS 251 C
English
19
Disengage the chain brake.
N Pull the hand guard towards the
front handle until there is an audible
click – the chain brake is
disengaged.
Fitting the chain
WARNING
Wear work gloves to protect your hands
from the sharp cutters.
N Fit the chain – start at the bar nose.
N Fit the guide bar over the studs (1) –
the cutting edges on the top of the
bar must point to the right.
N Engage the peg of the tensioner
slide in the locating hole (2) –- place
the chain over the sprocket (3) at
the same time.
N Turn the tensioning screw (4)
clockwise until there is very little
chain sag on the underside of the
bar – and the drive link tangs are
engaged in the bar groove.
N Refit the sprocket cover and screw
on the nut only fingertight.
N Go to chapter on "Tensioning the
Saw Chain"
Removing the chain sprocket cover
N Swing grip (1) into position (until it
engages)
N Turn the wing nut (2) to the left until
it hangs loosely in the chain
sprocket cover (3)
N Remove chain sprocket cover (3)
Mounting the tensioning gear
N Remove and reverse tensioning
gear (1)
001BA186 KN
143BA003 KN
3
1
1
2
4
001BA187 KN
Mounting the Bar and Chain
(quick chain tensioner)
1
2
3
2310BA013 KN
1
2310BA014 KN