Mounting The Bar And Chain (Side Chain Tensioner) - Stihl MS 251 Manual De Instrucciones

English
Mounting the Bar and Chain
(side chain tensioner)
Removing the chain sprocket cover
Unscrew the nut and remove the
N
chain sprocket cover.
1
2
Turn the screw (1)
N
counterclockwise until the tensioner
slide (2) butts against the left end of
the housing slot.
28
Disengage the chain brake.
Pull the hand guard towards the
N
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.
Fit the chain – start at the bar nose.
N
1
3
1
2 4
Fit the guide bar over the studs (1) –
N
the cutting edges on the top of the
bar must point to the right.
Engage the peg of the tensioner
N
slide in the locating hole (2) –- place
the chain over the sprocket (3) at
the same time.
Turn the tensioning screw (4)
N
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.
Refit the sprocket cover and screw
N
on the nut only fingertight.
Go to chapter on "Tensioning the
N
Saw Chain"
MS 251, MS 251 C