16
Replaceguide bar when the groove is worn,
the guide bar is bent or cracked, or when
excess heating or burring of the rails occurs.
Ifreplac ement is necessary, use only the guide
barspecified for your saw in the repair parts list
or on the decal located on the chain saw.

CHAIN SHARPENING

WARNING: Improper chain sharp-
ening techniques and/or depth gauge mainte-
nance will increase the chance of kick back
which can result in serious injury.
WARNING: Wear protec tive gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
Conditions which indicate the need for c hain
sharpening:
SReduction in size of wood chips. The size
ofthe wood chip will dec rease as the chain
gets duller until it becomes more like a
powder than a chip. Note that dead or
rotted wood will not produce a good chip.
SSaw cuts to one side or at an angle.
SSaw has to be forced through the cut.

Toolsrequired:

S3/16inch (4,5 mm) diameter round file and
file holder
SFlat file
SDepth gauge tool

TO SHARPEN CHAIN:

1.MoveON/STOPswitchtotheSTOP
position.
2. Check chain for proper tension. Adjust
chain tension if necessary. See CHAIN
TENSION section.
3. Sharpencutters.
SToshar pen the cutters, position the
file holder level (90˚) so that it rests
on the top edges of the cutter and
depthgauge.
NOTE: Thec hain has both left and
right hand cutters.
Depth Gauge
File
File Holder
Cutter 90˚
SAlignthe 25˚file holder marksparal-
lelwith the bar and to thecenter of the
chain.
Cutter
Cutter
25˚
File Holder Line
SSharpen cutters on one side of the
chain first. File from the inside of each
cutter to the outside. Then, turn the
chain saw around and repeat the pro-
cess for the other side of the chain.
SFileon the forward s troke only. Use 2
or 3s trokes per cutting edge.
SKeep all cutters the same length
when filing.
SFile enough to remove any damage
to cutting edges (side plate and top
plate ofc utter).
A
llC utters
Same Length
Remo
v
eD amage
TopPlate
Side Plate
SFile chain to meet the specifications
as shown.
25˚
60˚60˚
Rounded
Corner
0.025inc h
(0.65mm)
Right
Hook Angle
Wrong
Squared O
f
f
Corner
TooMuch Hook
A
ngle
WARNING: M aintain the proper
hook angle according to the manufacturer’s
specifications for the chain you are us ing. Im-
proper hook angle will increase the chanc e of
kickback which can result in s erious injury.
4. Checkand lower depth gauges.
Depth Gauge Tool
Depth Gauge
File
SPlace gauge tool on cutter.
SIf the depth gauge is higher than the
depthgauge tool, file it lev el to the top of
the depth gauge tool.
SMaintain rounded front corner of
depthgauge with a flat file.
NOTE: The very top of the depth
gauge should be flat with the front
half rounded offwith a flat file.
If you require further assistan ce or are unsure
about performing this procedure, contact your
authorized service dealer or call our c ustomer
assistance help line at 1--800--554--6723.