10. Maintenance of Saw Chain and Guide Bar
F38
F39
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
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