Operator`s manual
71
Saw Chain
SAW-CHAIN TROUBLESHOOTING (CONTINUED)
REMEDIES: (K-P)
K. Check your guide bar (grooves in bar’s body or
nose have worn too shallow), and check your rim or
spur drive sprocket (excessive wear is allowing drive
links to bottom out). Replace bar, sprocket, or both.
Sharpen drive-link tangs, as shown in the illustration
on page 72, if possible. If not, replace the chain.
This remedy applies to pictures
and
.
L. Maintain proper tension to prevent chain from
climbing out of spur drive sprocket. Replace drive
links or replace entire chain if many drive links are
damaged. This remedy applies to picture
.
M. Sprocket has worn out of pitch, replace it. Replace
chain. Do not attempt to run a new chain on an
old sprocket, or an old chain on a new sprocket.
This remedy applies to picture
.
N. Drive sprocket has worn down until drive-link
tangs hit bottom. Replace drive sprocket. Sharpen
drive-link tangs as shown in the illustration below,
if possible. If not, replace the chain. This remedy
applies to picture
21
.
O. Remove damage from sides of drive links with a flat
file. Sharpen drive-link tangs as shown in the illustration
below. Use a thin file to open the groove lead-in at the
guide-bar’s tail. This remedy applies to picture
22
..
P. Bar rails have spread, or one rail has worn low,
allowing chain to lean over. Have bar rails serviced
by a dealer, otherwise replace bar. Replace chain if
wear is extensive or if problem persists. This remedy
applies to picture
23
.
Also check bottoms of tie straps (picture
,
page 69), and tops of bar rails (picture
31
page 84).
NOTE
CONTINUED…
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