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14
CHAIN SHARPENING
WARNING: Improper chain sharpen-
ing techniques and/ or depth gauge mainte-
nance will increase the chance of kickback
which can result in serious injury.
WARNING: Wear protective gl oves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
Conditions which indicate the need for chain
sharpening:
S Reductionin size ofwoodchips. The size
ofthewoodchipwilldecreaseasthechain
gets duller until it becomes more like a
powder than a chip. Note that dead or
rotted wood will not pr oduce a goodchip.
S Saw cuts to one side or at anangle.
S Saw has to be forced through the cut.
Tools required:
S 3/16inch (4,5mm)diameterroundfileand
file holder
S Flat file
S Depth gauge to ol
TO SHARPEN CHAIN:
1. MoveON/STOPswitchtotheSTOP
position.
2. Check chain for proper tension. Adjust
chain tension if necessary.
3. Sharpen cutters.
S To sharpen the cutters, position the
file holder level (90˚) so that it rests
on the top edges of the cutter and
depth gauge.
NOTE: The chainhas bothleftand
right hand cutters.
Depth Gauge
File
File Holder
Cutter
90˚
S Al ignthe 25˚ fileholder marksparal-
lelw itht hebarandt othecenterofthe
chain.
Cutter
Cutter
25˚
File Holder Line
S S harpen cutters on one side of the
chain first. File from the i nside of e ach
cutter to the outside. Then, turn the
chain saw around and repeat the pro-
cess for the other side of the chain.
S Fileontheforwardstrokeonly. U se2
or 3 strokes per cutting edge.
S Keep all cutters the same length
when filing.
S File enough to remove any dam age
to cutting edges (side plate and top
plate of cutter).
A
ll Cutters
Same Length
Remo
v
e Damage
Top Plate
Side Plate
S File chain to meet the specifications
as shown.
25˚
60˚
60˚
Rounded
Corner
0,65 mm
Right
Hook Angle
Wrong
Squared O
f
f
Corner
Too Much Hook
A
ngle
WARNING: Main tain the p roper h ook
angle according to the manufacturer’s specifi-
cations for the chain you are using. Improper
hook angle will increase the chance of kick-
back which can result in serious injury.
4. Check and lower depth gauges .
Depth Gauge Tool
Depth Gauge
File
S Pl a ce gauge tool on cutter. If the
depth gauge is higher than the depth
gauge tool, file it level to the top of the
depth gauge tool.Maintain rounded
frontcorner ofdepthgaugewithaflat
file.
NOTE: The very top of the depth
gauge should be flat with the front
half rounded off with a flat file.
If you require further assistance or are unsure
about performing this procedure, contact your
authorized service dealer .
CARBURETOR ADJUSTMENTS
WARNING: Thechainwillbemoving
during most of this procedure. W ear your pro-
tective equipment and observe all safety pre-
cautions. The chain must not move at idle
speed.
The carburetor hasbeen carefully set atthe
factory. Adjustments may be necessary if
you notice any of the following conditions: