31
Carlton
®
Maintenance and Safety Manual
Side view of guide bar problems
Sprocket nose
guide bar
Spread tip and
broken nose
bearing assembly.
Cause: Boring
cuts, loose saw
chain tension,
accidents, operating
techniques that
twist the nose.
Remedy: Install new
replaceable sprocket
nose, or if the wear
is extensive replace
entire guide bar.
Guide bar rail
Guide bar rails
chipped or worn
excessively behind
the nose.
Cause: Heavy
limbing, or loose
saw chain tension.
Remedy: Invert
the guide bar on
the chain saw
periodically to
reduce such wear.
On replaceable-nose
guide bars with
minor wear, install
a new nose and file
down the nose’s
rails for smooth
saw chain flow. If
wear is extensive on
either kind of bar,
replace the guide
bar.
Guide bar mount
section
Guide bar bent,
twisted or cracked.
Cause: Side loading or
pinching.
Remedy: Replace guide
bar.
Solid nose
guide bar
Burned and cracked
tip.
Cause: Accidents
or operating
techniques that put
pressure on the side
of the nose.
Remedy: Dealer may
be able to repair
minor damage,
otherwise replace
guide bar.
Wear patterns
Can appear at any
location on the
guide bar.
Cause: High or
low depth gauges
on saw chain.
Remedy: Replace
guide bar.
Guide bar
lead ins
Lead ins show thin
or low rails.
Cause: Rails
pounded by loose
saw chain tension.
Remedy: Replace
guide bar and
saw chain.
Guide Bar Troubleshooting
