Owner's Manual

22
English / USA
MS 191 T
You can run chains of different pitches
on this chainsaw – depending on the
chain sprocket (see “Specifications”):
The chain pitch (1) must match the pitch
of the sprocket and the guide bar (for
Rollomatic). The drive link gauge (2)
must match the bar groove width (3).
The pitch is marked on the chain
sprocket and guide bar in inches
(e.g. 3/8 or .325). The groove width
is marked on the guide bar in
millimeters (e.g. 1.6).
If non-matching components of the
wrong pitch or drive link gauge are
run together on the same machine
they may be damaged beyond
repair after a short period of
operation.
: Unscrew the nut and remove the
chain sprocket cover.
: Turn screw (4) counterclockwise
until the tensioner slide (5) butts
against left end of housing slot.
: Disengage the chain brake: Pull the
hand guard (6) back toward the front
handle.
Wear work gloves to protect your
hands from the sharp cutters.
: Fit the chain – start at the bar nose.
Mounting the Bar and Chain
(Front Chain Tensioner)
001BA105 KN
1
2
3
a
t = a : 2
001BA127 KN
4
5
001BA128 KN
001BA108 KN
6
143BA003 KN