Checking
chain
lubrication
Wom
chain
sprocket
Breaking
In
OHomatic
chain
Every new chain
has
to be broken
In
for about 2 to 3 mInu-
tes. Ample chain lubrication is essential during this period.
After breaking
in
, stop
the
engine, check chain tension and
adjust if necessary.
Correct
chain
tension
The Ollomatic chain must always be slackened off after
finishing cutting
work
A chain properly tensioned when
~
is warm would, when the temperature drops, be subjected
to such great contnaction stresses that
~
would break and
also damage the crankshaft and bearings.
The Oilomatic chain must, therefore, always be tensio
ned-
w~
the engine switched off - before you start cutting.
Chain tension is correct
In
the cold condition when the
chain fits snugly
on
the underside of the bar and can still
be moved along the bar
by
hand. Extreme care must be
!eken as ·the cutting edges are very sharp.
When the chaln saw Is operated at extremely low outside
temperatures a correctfy cold-tensioned Ollorpatic chain
will begin to sag noticeabl)i"as H warms up to
noimal
operat-
ing temperature. The chaln must then be retensioned.
However, the chain must be slackened off again
immedia-
tely after shutting down the saw. This Is necessary to avoid
contraction
stress which would occur as
the
chain cools
down to ambient temperature.
A new chain must be retensloned more frequently than a
used one util h has stretched fully.
Chain
sprocket
The stress and strain
on
the chain sprocket are particularly
high.
~
the
wear
mar1<s
on the teeth are very pronounced
(about
0.5
mm/O
.
D2
In
deep), the sprocket should be re-
pl8ced. A
wom
sprocket reduces the service life
of
the saw
chain. The chain sprocket should be replaced as a matter
of routine whh every secOnd Oilomatic chain.
n Is
best
to
use two chains alternately
w~
one sprocket. 29
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