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CS-271T
• Place the depth gauge tool firmly on guide bar
so that depth gauge protrudes.
Then file top of depth gauge with the flat file until
flat with top of the depth gauge tool.
- Be sure to round off the front edge of the
depth gauge.
Properly filed cutters are shown in illustration.
When setting of the chain is finished, soak it in oil
and wash away filings completely before using.
- When chain has been filed on the bar,
supply sufficient oil to it, rotate the chain
slowly to wash away the filings before using
again.
- If the chain saw is operated with filings
clogged in the groove, the saw chain and the
guide bar will be damaged prematurely.
- If the saw chain becomes soiled with resin, for
instance, clean it with kerosene and soak in it
oil.
NOTICE
These angles are referred to as Oregon 91PX or
91VG, 90PX.
To sharpen other follow chain manufacturer’s
instruction.
Remove until
flat with tool
Depth gauge tool
Round off the edge
1/5
One fifth of file diameter remains
above cutter edge
Top plate filing angle
80°
30°
Parallel
91PX : 0.64 mm
(0.025 in.)
91VG : 0.64 mm
(0.025 in.)
90PX : 0.51 mm
(0.020 in.)
Top plate cutting angle
Depth gauge
91PX : 60°
91VG : 60°
90PX : 50°
Side plate angle