16
CLEAN AIR FILTER
A dirty air filter decreases engine perform-
ance and increases fuel consumption and
harmful emissions. Always clean after every
5 hours of operation.
1. Clean the cover and the area around it to
keep dirt from falling into the carburetor
chamber when the cover is removed.
2. Remove parts by pressing button to re-
lease air filter cover.
NOTE:
To avoid creating a fire hazard or
producing harmful evaporative emissions, do
not clean filter in gasoline or other flammable
solvent.
3. Wash the filter in soap and water.
4. Allow filter to dry.
5. Replace parts.
Button
Air Filter Cover
Air Filter
BAR MAINTENANCE
If your pruner cuts to one side, has to be
forced through the cut, or been run with an im-
proper amount of bar lubrication it may be
necessary to service your bar. A worn bar will
damage your chain and make cutting difficult.
After each use, clean all sawdust from the
guide bar and sprocket hole.
To maintain guide bar:
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Disconnect spark plug.
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Loosen and remove bar clamp nut and
chain brake. Remove bar and chain from
pruner.
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Clean the oil holes and bar groove after
each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
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Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
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When rail top is uneven, use a flat file to
restore square edges and sides.
Correct Groove
Worn Groove
File Rail Edges
and Sides
Square
Replace guide bar when the groove is worn,
the guide bar is bent or cracked, or when
excess heating or burring of the rails occurs. If
replacement is necessary, use only the guide
bar specified for your pruner in the repair
parts list.
LUBRICATION
Bar Oil
Fill Cap
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See GUIDE BAR AND CHAIN OIL under
the OPERATION section.
MUFFLER AND SPARK ARREST-
ING SCREEN
WARNING:
The muffler on this prod-
uct contains chemicals known to the State of
California to cause cancer.
As your unit is used, carbon deposits build up
on the muffler and spark arresting screen.
For normal homeowner use, however, the
muffler and spark arresting screen will not re-
quire any service. After 50 hours of use, we
recommend that your muffler be serviced or
replaced by your authorized service dealer.
REPLACE SPARK PLUG
Replace the spark plug each year to ensure
the engine starts easier and runs better. In-
spect spark plug every 25 hours of usage.
Clean and/or replace as necessary. Set spark
plug gap at 0.025 inch (0.6 mm). Ignition tim-
ing is fixed and nonadjustable.
NOTE:
This spark ignition system complies
with the Canadian standard ICES--002.
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder and
discard.
3. Replace with Champion RCJ-6Y spark
plug and tighten securely with a 3/4 inch
(19 mm) socket wrench.
4. Reinstall the spark plug boot.
SERVICE AND ADJUSTMENTS
WARNING:
Disconnect the spark
plug before performing maintenance, service, or
adjustments except for carburetor adjustments.
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:
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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.