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HOMELITE SAW CHAIN
Your saw has a fast-cutting chain with a sprocket which
matches it in pitch. When the chain is to be replaced,
always install a new sprocket of matching pitch because
a worn sprocket would be out-of-pitch and damage lhe
new chain.
Not only lor fastest cutting, but also for maximum life of
the chain and all saw parts, always keep the chain in
such good, sharp condition that bearing down hard to
make lhe chain cut ls unnecessary. When the sawdust
turns from chips into a line powder and you lind your-
sell pressing hard to feed the chain, STOP IMMEDI-
ATELY and lile the chain.
Uniformity and accuracy are necessary for success in
liling saw chain. These are easiest to obtain with a file
holder which has the required 35o top filing angles
marked on it, and also holds the lile at correct height
(1/10 ol file diameter above top plate of tooth) to pro-
duce the required side plale angle and culting edge.
For new 3/8 pitch chain, a 7132 diameler "fast-cut"
round file and holder (our assembly A-23133-A) is re-
quired. When about half of the original tooth steel has
been liled away, you should switch first to a 13164"
diamefer file and later on lo a 3116tt diameter file. The
reason for using a smaller diameter lile is the slight
taper of the tooth's top plate which reduces the tooth
size.
HOW TO FTLE CUTTERS
A chain liling vise holds the cutters rock-steady for
filing; but you can do a satisfactory job "on the bar" if
you tighten up the tension a bit so the chain does not
wobble, and do all of the filing near the midpoint of the
bar. ALWAYS WEAR GLOVES OR PROTECT YOUR
H A N D S W I T H A R A G W H E N W O R K I N G O N T H E C H A I N .
Be sure to file all cutters to lhe same length - if you re-
place worn cutters, lile the new ones back to the same
length as the other teelh in the loop so that all cutters
get a biting chance.
Here's What You Should Do:
1. Hold file against cutter lace at 35o angle (marked on
file holder).
2. Keep file level - do not let it dip or rock.
3. File in one direDtion only-towards
lront corner ol
the tooth. Move file away from tooth face on return
stroke.
4. Use light but lirm pressure, mostly towards back ol
tooth. Avoid heavy downward filing pressure. The
hofder will keep 10o/o ol lhe tile above the lop plate,
automatically producing a beveled hollow-ground
under edge.
5. Put a few lirm strokes on every tooth, filing all cutters
on one side of the chain, then all cutters on the other.
Rotate file in holder occasionally.
HERE'S WHAT YOU SHOULD GET:
2. Beveled under edge.
3. Side plale 90o to line of chain travel.
6. A sharp edge will not reflect light. Examine the edge
to see if the dulled area has been removed.
D E P T H G A U G E J O I N T E R S ,
A D J U S T A B L E O R S E T T Y P E
A . 2 3 1 3 3 . A F I L E H O L D E R W I T H
I/3'" DIAMETER ROUND FILE.
I
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THE FOLLOWING ARE EXAMPLES
OF ERRORS IN FILING
P R O N O U N C E D H O O K : C A U S E D B Y : I O O I I U C H
F I L I I I G P R E S S U R € O R T I P O F F I L E H E L D L O W .
C H A I N W I L L G R A B A N O J E R X ,
. ' .
B A C K S L O P E : C A U S E D B Y L O W E R I N G H A N D L E
E N D O F F I L E . C H A I N F E E D S U N W I L L I N G L Y ,
C U T T E R W E A R S A T T H E R E A R R I V E T H O L E .
T H I N , D E L I C A T E E D G E : F I L E H E L D T O O L O W .
T H E U N D E R - C U T E D G E W I L L B R E A K .
B L U N T E D G E : C A U S E D B Y H O L D I I G F I L E T O O
H I G H O R C O C K I N G F I L E A T A N A N G L E
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8 , F L A T F I L E F O R F I L I N G A N D
S H A P I N G D E P T H G A U G E S ,
plate angle.
E O U I P M E N T
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