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85°
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91
• Place the depth gauge tool firmly on guide bar so that depth gauge protrudes. Then file top of depth gauge with flat file
until flat with top o the gauge tool.
- Be sure to round off the front edge of the depth gauge.
• Properly filed cutters are shown below.
Sharpen bottom edge
Depth gauge tool
Remove until
flat with tool
Round off
the edge
(Top plate angle) (Side plate angle) (Top plate cutting angle) (Depth gauge)
• 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 prema-
turely
• If the saw chain becomes soiled with resin, for instance, clean it with kerosene and soak it in oil.
0.64 mm (0.025”)
Parallel
CHAIN TYPE AND SPROCKET PITCH
Saw chain should be used with corresponding pitched
sprocket. To identify chain type and pitch of sprocket,
check as follows.
• Chain type number is stamped on drive link.
• Sprocket pitch is stamped on clutch drum.
Number indicates
Chain type
Number
indicates
Chain type
91S
(SPROCKET)
(DRIVE LINK)