Depth gauges
The depth
gauge
determines the height
at
which the
cutter
enters
the wood and thus the thickness of the chip remo-
ved. The cutting
capacity and life of a saw chain are there-
fore influenced by the distance between the depth gauge
and the
cutting edge, i.e. the
depth
gauge setting. This
setting varies according
to
chain pitch and
must
be chec-
ked with the appropriate filing gauge.
The best cutting results
are
obtained with
the settings li-
sted in the table. However, the depth
gauge setting
may
be increased by 0.2 mm for cutting softwood in mild weat-
her
conditions.
Since
the depth gauge setting
is reduced when
the
cutter
is sharpened, its
height
must
be checked and lowered if
necessary. If the depth gauge projects
from the filing
gauge,
it must be filed down level
with the
gauge using a
flat
or
triangular file. The
contour
of the depth
gauge must
also be rounded off on Rapid chain. In the case
of Topic
chains the depth gauge should be rounded
off in line with
the stamped markings.
General
chain maintenance
Chain maintenance begins as soon as the
chain
is
fitted
on
the bar and sprocket. The essential points
are correct
chain tension and ample lubrication. See also "Guide
Bar, Chain
and Sprocket".
Clean the chain thoroughly in gasoline after sharpening to
52
remove
filings or grinding
dust. Then lubricate the chain by
Top: Table of recommended
depth gauge settings
Center: Depth gauge setting
Bottom: Filing down depth gauge (Topic chain)
Chain pitch
Setting Filing
gauge
.325" (8.25 mm) 0.65 mm 1110 893
4000
3/8" (9.32 mm) 0.65 mm 1110
893 4000
.404" (10.26 mm) 0.8
mm
1106 893 4000
1/2"
(12.7
mm)
0.8
mm
1106 893
4000
090 G chain saw
1/2" (12.7 mm) 1.2
mm
1106 893 4010
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