Service and adjustments, Warning – Poulan Pro PP446ET User Manual

Page 18

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.

Air Filter

Air Filter Cover

Button

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:
S

Disconnect spark plug.

Loosen and remove bar clamp nut and

chain brake. Remove bar and chain from

pruner.

Clean the oil holes and bar groove after

each 5 hours of operation.

Remove Sawdust From

Guide Bar Groove

Oil Holes

Burring of guide bar rails is a normal

process of rail wear. Remove these burrs

with a flat file.

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

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.

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

Chain sharpening is a complicated task that

requires special tools. We recommended you

refer chain sharpening to a professional chain

sharpener.

CHAIN REPLACEMENT

WARNING:

Wear protective gloves

when handling chain. The chain is sharp and

can cut you even when it is not moving.

It is normal for a new chain to stretch during the

first 15 minutes of operation. You should re-

check your chain tension frequently and adjust

the chain tension as required. See CHAIN TEN-

SION section.

Replace the old chain when it becomes worn or

damaged. Use only the Low-Kickback replace-

ment chain specified in the repair parts list.

TO REPLACE CHAIN:

1. Disconnect spark plug.

2. Remove bar clamp nut.

3. Remove bar clamp.

4. Turn adjusting screw by hand counter-

clockwise until adjusting pin just touches

the stop.