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19
30°
85°
60°
91
0.64 mm (0.025”)
Parallel
Number
indicates Chain
type
Number
indicates
Chain type
91S
(SPROCKET)
(DRIVE LINK)
• Properly filed cutters are shown below.
(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
prematurely
• If the saw chain becomes soiled with resin, for instance, clean it with kerosene and soak it in oil.
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 (A) is stamped on drive link.
• Sprocket pitch (B) is stamped on clutch drum.
A
B