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CLEANING THE SPARK ARRESTING
SCREEN
Cleaning is required every 25 hours of opera-
tion or annually, whichever comes first.
1.
Loosen knob on air filter cover. Remove air
filter cover.
2.
Loosen 3 screws on cylinder cover.
Remove the cylinder cover.
3.
Loosen and remove the screw from the
muffler exhaust outlet cover.
4.
Remove spark arresting screen. Handle
screen carefully to prevent damage.
5.
Clean the spark arresting screen gently
with a wire brush. Replace screen if breaks
are found.
6.
Replace any broken or cracked muffler
parts.
7.
Reinstall spark arresting screen.
8.
Reinstall screw in muffler exhaust outlet
cover.
9.
Reinstall the cylinder cover and 3 screws.
Tighten securely.
10. Reinstall air filter cover. Tighten knob se-
curely.
REPLACE SPARK PLUG
The spark plug should be replaced each year to
ensure the engine starts easier and runs better.
Ignition timing is fixed and nonadjustable.
NOTE:
This spark ignition system complies
with the Canadian standard ICES- -002.
1.
Loosen knob on air filter cover. Remove air
filter cover.
2.
Pull off the spark plug boot.
3.
Remove spark plug from cylinder and dis-
card.
4.
Replace with Champion RCJ- -7Y spark
plug and tighten securely with a
(19 mm) socket wrench. Spark plug gap
should be 0.025 inch (0.6 mm).
5.
Reinstall the spark plug boot.
6.
Reinstall air filter cover. Tighten knob secure-
ly.
Spark
Plug
Boot
REPLACE FUEL FILTER
To replace fuel filter (part #530095646), drain your
unit by running it dry of fuel. Remove fuel cap and
its connected retainer from tank. Pull filter from
tank and remove from line. Replace and re-
assemble.
CHAIN ADJUSTMENT
See CHAIN TENSION in ASSEMBLY section.
CHAIN SHARPENING
WARNING:
ing techniques and/or depth gauge maintenance
3
/
inch
4
Knob
Air Filter
Cover
Improper chain sharpen-
will increase the chance of kickback which can re-
sult in serious injury.
WARNING:
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. The size of
the wood chip will decrease 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.
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
Tools required:
S 7/32 inch (5 mm) diameter round file and file
holder
S Flat file
S Depth gauge tool
TO SHARPEN CHAIN:
1.
Move ON/STOP switch to the STOP posi-
tion.
2.
Check chain for proper tension. Adjust
chain tension if necessary. See CHAIN
TENSION section.
3.
Sharpen cutters.
S To sharpen the cutters, position the file
holder level (10° ) so that it rests on the
top edges of the cutter and depth
gauge.
NOTE:
right hand cutters.
File Holder
File
Cutter
S Align the 25° file holder marks parallel
with the bar and to the center of the
chain.
25°
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 process for the
other side of the chain.
S File on the forward stroke only. Use 2 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
of cutter).
All Cutters
Same Length
16
Wear protective gloves
The chain has both left and
Depth Gauge
Cutter
Cutter
Remove Damage
Top Plate
Side Plate
10°
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