CLEANING
AND MAINTENANCE
SHARPENING SAW CHAIN
A
_l,
WARNING: Unplug chain saw from
power source before servicing.
Severe
injury or death could occur from electri-
cal shock or body contact with moving
chain.
30° Guide
\
_l_l Filing
Direction
Mark
_ -
File
3uide
File
A
WARNING: Cutting edges on chain
are sharp. Use protective gloves when
handling
chain.
Keep chain
sharp. Your
saw will cut faster
and
more safely. A dull chain will cause undue sprock-
et, guide bar, chain, and motor wear. If you must
force chain into wood and cutting creates only saw
dust with few large chips,
chain is dull.
items Needed to Sharpen Chain
Purchase
these items from your local dealer, hard-
ware store, or chain saw supplies
outlet.
*
5/32" round file
*
Depth
gauge tool
*
File guide
*
Vise
.
Medium
sized flat file
Sharpening Cutters
Use file guide for 30 ° filing.
1.
Adjust chain for proper tension (see Stay Clulin
Tensiotl Adjustment,
page
I l ).
2.
Clamp
guide
bar in vise to hold saw steady.
Note:
Do not clamp chain.
3.
Press 5/32" round file (attached
to file guide)
into groove between
top plate and depth gauge
on chain. File guide should rest on both top plate
and depth gauge (see Figure 23). Note: File at
midpoint
of guide bar.
4.
Hold file guide level. Make sure 30 ° mark on
file guide is parallel to center of guide bar (see
Figure 23). This will insure that you file cutters
at 30 ° angle.
5.
File trom
inside
towards
outside
of cutter
until sharp. Only file in this one direction
(see
Figure
23). Note:
Two or three strokes
with
file should
sharpen
cutter.
6.
After each cutter
is sharpened,
move
chain
forward
to sharpen next cutter. File all cutters
on one side of chain.
7.
Move
to other
side of chain and repeat
pro-
cess.
Note: This illustrationshows file guide placement and
filing direction for sharpening cutters on left side of
chain.
Figure 23 - File and File Guide Placement
On
Chain
Filing Cutter Depth Gauges
The cutter
depth
gauge clearance
is reduced
as
cutters are sharpened.
After every
second or third
sharpening,
reset cutter depth gauges.
1. Place
depth
gauge tool (.025")
firmly
across
top of two cutters.
Make sure depth gauge en-
ters slot in depth
gauge tool (see Figure
25).
2.
Use medium flat file. File depth gauge level with
depth gauge tool.
3.
Remove
depth gauge tool. With fiat file, round
off front comer of cutter depth gauge (see Figure
26).
After several hand filings,
have authorized
service
center
or sharpening
service
machine
sharpen
chain. This will insure even filing.
Depth Gauge (right side
Depth Gauge (left side °f chain)
of chain)
,
Groove
___/_._
o .........,,
Top Plate (left "'2S_S_'J
side of chain) _./_/)_
Top Plate (right
/_%,,'
side of chain)
Right Side of Chain
Figure 24 - Chain Part Locations
Depth
Gauge
/
Figure
25 - Depth
Gauge
Tool
On Chain
Front Corner
i_
"025''
Figure
26 - Round
Off
Front
Corner
Of Depth
Gauge
2O