MAINTENANCE

CLEAN AIR SCREEN

Air screen must be kept free of dirt and chaff to prevent engine damage from overheating. Clean with a wire brush or compressed air to remove dirt and stubborn dried gum fibers.

ENGINE COOLING FINS (See Fig. 15)

Remove any dust, dirt or oil from engine cooling fins to prevent engine damage from overheating.

Remove screws from blower housing and lift housing and dipstick tube assembly off engine.

Cover oil fill opening to prevent entry of dirt.

Use compressed air or stiff bristle brush to thoroughly clean engine cooling fins.

To reassemble, reverse above procedure.

SCREWS

BLOWER HOUSING

SCREWS

HANDLE

COVER

CARTRIDGE

DIPSTICK TUBE

AIR SCREEN

ASSEMBLY

 

OIL FILL

OPENING

ENGINE COOLING FINS

FIG. 15

AIR FILTER (See Fig. 16)

SPARK PLUG

PRE-CLEANER

BASE

TABS

SLOTS

FIG. 16

Your engine will not run properly using a dirty air filter. Replace pre-cleaner after every 25 hours of operation or every season. Service paper cartridge every 100 hours of operation or every season, whichever occurs first.

Service air cleaner more often under dusty conditions.

Pull up on air filter cover handle and rotate towards engine.

Remove cover.

Carefully remove air filter cartridge and pre-cleaner from base.

Clean base carefully to prevent debris from falling into carburetor.

NOTE: If very dirty or damaged, replace cartridge.

Place new pre-cleaner and cartridge firmly in base.

Align tabs on cover with slots in blower housing and replace cover.

Hook handle on cover and push down on handle to close.

IMPORTANT: Petroleum solvents, such as kerosene, are not to be used to clean the cartridge. They may cause deterioration of the cartridge. Do not oil cartridge. Do not use pressurized air to clean cartridge.

ENGINE OIL FILTER

Replace the engine oil filter every season or every other oil change if the tractor is used more than 100 hours in one year.

MUFFLER

Inspect and replace corroded muffler and spark arrester (if equipped) as it could create a fire hazard and/or dam- age.

SPARK PLUGS

Replace spark plugs at the beginning of each mowing season or after every 100 hours of operation, whichever occurs first. Spark plug type and gap setting are shown in “PRODUCT SPECIFICATIONS” section of this manual.

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Poulan 279370 owner manual Clean AIR Screen, Engine OIL Filter, Muffler, Spark Plugs