Operator`s manual

86
Guide Bars
GUIDE-BAR TROUBLESHOOTING (CONTINUED)
REMEDIES: (T-Y)
T. Shallow grooves and wire edges are the result
of inadequate lubrication, improper tension or
normal wear over time. Use a flat file to square
up the bar’s rails and remove wire edges promptly.
Left alone, wire edges can break off, chipping
away good rail material. This remedy applies to
pictures
 29 and  30 .
U. A low rail is caused by one of two things: (a)
crooked-cutting chain or (b) chain leaning over
in a worn groove. Replace the bar. Replace the
chain as well if chain continues to lean in the new
bar. (For more information on this problem and
its causes, refer to pages 70-71, picture
 23 and
remedy P.) This remedy applies to pictures
 29
and  31 .
V. Accidents or irregular operating techniques which
push the drive links sideways or place excessive
pressure on the side of the nose can cause breaks
or cracks in the rails of solid-nose bars. Your dealer
may be able to repair minor damage on a relatively
new bar. This remedy applies to pictures
 32 and  33 .
W. Pinched rails, lack of lubrication, or accidents and
cutting techniques which push the drive links side-
ways in the groove can create extreme friction
which causes blue discoloration. Blue spots on rails
are soft and will wear rapidly. Replace the bar. This
remedy applies to picture
 34 .
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