F38
F39
50
English
11. 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