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Replaceguide bar when thegroove is worn,
the guide bar is bent or cracked, or when
excess heatingorburring oftherailsoccurs.
If replacementis necessary,useonly theguide
barspecifiedforyoursawintherepairparts list
or on the decal located on the chain saw.
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better . Ignition tim ing is fixed andnon-
adjustable.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover .
3. Pull of f the spark plug boot.
4. Remove spark plug from cylinder and
discard.
5. Replace with Champion RCJ--7Y spark
plug and tighten securely with a 19 mm
socket wrench. Spark plug gap should
be 0,5 mm.
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely .
Spark
Plug
Cylinder
Cover
Spark
Plug Boot
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 gloves
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 Reduction in size of wood chips. Thesize
ofthewoodchipwilldecreaseasthechain
gets duller until it becomes more like a
powder than a chip. Note that dead or
rotted wood will not produce a good chip.
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
Tools required:
S 5/32 inch (4 mm) diameter round file and
file holder
S Flat file
S Depth gauge tool
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 chain has bothleft and
right hand cutters.
Depth Gauge
File
File Holder
Cutter
90˚
S Align the 30˚ fileholder marks paral-
lelwiththebarandtothecenterofthe
chain.
Cutter
Cutter
30˚
File Holder Line
S Sharpen 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.
S Fileontheforward strokeonly.Use2
or 3 strokes per cutting edge.
S Keep all cutters the same length
when filing.
S File enough to remove any damage
to cutting edges (side plate and top
plate o f cutter).
A
ll Cutters
Same Length
Remo
v
e Damage
Top Plate
Side Plate
S File chain to meet the specifications
as shown.
30˚
80˚
60˚
Rounded
Corner
0,65 mm
Right
Hook Angle