Cutting Attachment
, O
Uln
t
et
borings
2
Ge
n
te
,
ring
borings
The cutting attachment
of
a chain saw consists of the guide
bar; saw chain and chain
sprocket
GuJdebar
The nose and underside
of
the guide
bar
are subject
to
a
particularly high rate
of
wear
. To avoid one-sided wear, tum
the bar around every
time
you resharpen or replace the
chain. Regular cleaning
of
the
011
Inlet holes and guide
bar
groove is also important. The
bar
can be examined for signs
of wear
at the same
time.
A minimum
bar
groove depth
of
7 mm (0.28 in)
must
be
maintained in order to prevent the drive
Unks
fouling the
bottom of the groove (the heels
of
the culler and tie strap
would no longer locate on the guide bar track
).
This depth should be measured
at
the point where the
bat
is
stressed
mOst
,
I.
e.
the
bar
noee
o
r:
D'..!romatic
bars
and
the area where most
of
the cuttiilg is done
on
RoliomaUc
bars. The guide bar must be replaced.
1f
the minimum depth
28 cannot be maintained.
On Roliomatic guide bars the bearing
01
the nose sprocket
must also
be
lubricated at regulated intervals with the
appropriate grease
gun.
Lubricate at least once druly under
normal operating conditions. Only use a high grade grease
for refilling the grease gun. e.g. refill lUbe
0781120
1111
.
To lubricate, place chain saw on its side so that the bar
nose is firmly supported. Clean the grease hole and pump
in grease while slowly pulling saw chain around
bar
(sprocket rotates) so
thai
bearing is uniformly filled. When
grease emerges
at
the hole on the other
sid!>
of the bar or
around
!be
nose. sprocket, repeat the procedure on the
other side.
The sprocket nose bearing should
be
greased more often
ff
the
cutting
attachment is used
in
damp conditions, e.g.
working
in
snow. AfII!r finishing cutting work the sprocket
nose should be .thoroughly greased from both sides
to
force moisture
out
of the bearing and prevent corrosion.
Chain
lubrication
Never operate the chain
saw
without proper chain lubrica-
tion. Check operation
of
chain lubrication and level in 011
tank before starting work.
Hold chain saw with mounted cutting attachment over a
light background. Take care, the Ollomatic chain must not
touch the ground.
i.
e. keep H at least
20
em (8 in) clear of
the ground. Run the engine with haH-throttle position.
ff
an
increasing patch
of
oil can be seen, chain lubrication
is
operating correctly.
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