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TROUBLE SHOOTING
IF YOUR SAW DOES NOT CUT AS WELl. AS IT SHOULD AFTER SHARPENING OR tT DOES NOT CUT
STRAIGHT, YOU MAY HAVE A WORN OR DAMAGED GUIDE BAR, A WORN SPROCKET, OR DAMAGED
LINKS IN THE CHAIN THIS CAN BE CHECKED AND REPAIRED FOR YOU AT YOUR SEARS SERVICE
DEPARTMENT HOWEVER, BEFORE DOING THIS, CHECK FOR CUTTER PROBLEMS,
SHARPENING ERRORS_IF YOUR CUTTERS LOOK LIKE THESE, RE-SHARPEN THEM.
Top plate angle not 35 °
caused by holding
sharpener at wrong angle.
/
/
Hook in side plate--
caused by pressing
sharpener down too hard.
or holding sharpener too
low
\
\
\
Backslope in side plate--
caused by holding
sharpener too high Chain
won't feed properly; cutters
wear fast at heel
Most chain problems are caused by three things: Incorrect grinding, lack of lubrication, and loose chain tension.
Here are some of the most common signs to look for if your saw chain is not performing right
CONDITION
Hook in side plate cutting
edge
Blunt top plate cutting angle
Top plate angle less than
recommended
CAUSE
Sharpener held too low or
the stone was too small,
Sharpener hefd too high or
stone was tOO large
..........................J ........................................
Sharpener held at less than
recommended angle
Top plate angle more than Sharpener held at more than
recommended recommended angle
Excessive heel wear on
cutters and tie straps
Concave wear on bottom of
RESULT
Rough cutting Chain grabs.
Cutters dull quickly or won't
hold a cutting edge,
REMEDY
Sharpen cutters to
recommended angle, Check
stone size, Hold
sharpener correctly
Cutters cut slow Requires ...... Grind cutters to recom- ..........
extra pressure to cut Will
cause excessive wear on
bottom of chain parts
Stow cutting Requires extra
pressure to cut
mended angle Check stone
size Hold sharpener
correctly
Grind to recommended ..............................
angle
Cutting angle is very sharp. - Grind to recommended
but will dull fast Cutting
action rough and erratic
One or a combination of the Heel of cutter wears off
following: Blunt top ptate rapidly In cold weather
grinding,, Forcing dull chain cracks will appear
to cut, Forcing chain to cut
frozen wood. Low depth
gauges Lack of lubrication
Tight chain tension on hard-
angle
s,arpen u.ers ProPerlY'
Use plenty of lubrication.
Don't forcechain tocut Keep
cutters sharp
concave wear On bottom Of Use SPr0cket--n0se bar
cutters and connecting tie
straps
nose bar Heavy undercutting
or boring with hard-nose bar.
all parts
Reduce amount of cutting
with nose or top of bar
PAGE 9
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