Poulan 178379 owner manual Muffler, Spark Plugs, Cleaning

CUSTOMER RESPONSIBILITIES

ENGINE COOLING FINS (See Fig. 14)

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

AIR SCREEN

DIPSTICK TUBE

ASSEMBLY

	SPARK
ENGINE COOLING FINS	PLUG

FIG. 14

AIR FILTER (See Fig. 15)

Your engine will not run properly using a dirty air filter. Clean the foam 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.

•Remove knob(s) and cover.

TO SERVICE PRE-CLEANER

•Slide foam pre-cleaner off cartridge.

•Wash it in liquid detergent and water.

•Squeeze it dry in a clean cloth.

•Saturate it in engine oil. Wrap it in clean, absorbent cloth and squeeze to remove excess oil.

•If very dirty or damaged, replace pre-cleaner.

•Reinstall pre-cleaner over cartridge.

•Reinstall cover and secure with knob(s).

TO SERVICE CARTRIDGE

•Remove cartridge nut.

•Carefully remove cartridge to prevent debris from enter- ing carburetor. Clean base carefully to prevent debris from entering carburetor.

•Clean cartridge by tapping gently on flat surface. If very dirty or damaged, replace cartridge.

•Reinstall cartridge, nut, precleaner, cover and secure with knob(s).

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 OR DRY CARTRIDGE. 18

COVER

KNOB

COVER	CARTRIDGE
	NUT

FOAM	PAPER
PRE-CLEANER
	CARTRIDGE
	BASE

FIG. 15

MUFFLER

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

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.

IN-LINE FUEL FILTER (See Fig. 16)

The fuel filter should be replaced once each season. If fuel filter becomes clogged, obstructing fuel flow to carburetor, replacement is required.

•With engine cool, remove filter and plug fuel line sec- tions.

•Place new fuel filter in position in fuel line with arrow pointing towards carburetor.

•Be sure there are no fuel line leaks and clamps are properly positioned.

•Immediately wipe up any spilled gasoline.

CLAMP

CLAMP

FUEL

FILTER

FIG. 16

CLEANING

•Clean engine, battery, seat, finish, etc. of all foreign matter.

•Keep finished surfaces and wheels free of all gasoline, oil, etc.

•Protect painted surfaces with automotive type wax.

We do not recommend using a garden hose to clean your tractor unless the electrical system, muffler, air filter and carburetor are covered to keep water out. Water in engine can result in a shortened engine life.