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10. Maintenance of Saw Chain and Guide Bar Make sure every cutter has the same length and
edge angles as illustrated. (F38)
(4) Cutter length
(5) Filing angle
(6) Side plate angle
(7) Top plate cutting angle
■GUIDE BAR
•Reverse the bar occasionally to prevent partial
wear.
•The bar rail should always be a square. Check
for wear of the bar rail. Apply a ruler to the bar
and the outside of a cutter. If a gap is observed
between them, the rail is normal. Otherwise, the
bar rail is worn. Such a bar needs to be
corrected or replaced. (F39)
(1) Ruler
(2) Gap
(3) No gap
(4) Chain tilts
F38
F39