Poulan 178112 Clean AIR INTAKE/COOLING Areas, Engine OIL Filter, Muffler, Spark Plugs, Cleaning

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CUSTOMER RESPONSIBILITIES

CLEAN AIR INTAKE/COOLING AREAS

To insure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times.

Every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and other cooling shrouds. Clean the cooling fins and external surfaces as necessary. Make sure the cooling shrouds are reinstalled.

NOTE: Operating the engine with a blocked grass screen, dirty or plugged cooling fins, and/or cooling shrouds removed will cause engine damage due to overheating.

AIR FILTER (See Fig. 16)

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 knobs and cover.

TO SERVICE PRE-CLEANER

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.

TO SERVICE CARTRIDGE

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

Reinstall precleaner cartridge, cover and secure with knobs.

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.

KNOBS

COVER

CARTRIDGE

FOAM

PRE-CLEANER

FIG. 16

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 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. 17)

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. 17

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.

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Contents PR20H42STC Safe Operation Practices for Ride-On Mowers Safety RulesBecome ALERT!!! Your Safety is IN- Volved Table of Contents Steering Wheel Seat Unassembled PartsSlope Sheet To Remove Tractor from CAR- TON AssemblyTools Required for Assembly HOW to SET UP Your TractorTo SET UP Your Mower for Mulching Install Seat See FigCheck for Proper Position of ALL Belts To Convert to Bagging or DISCHARG- INGCheck Tire Pressure Check Deck LevelnessOperation Know Your Tractor To USE Throttle Control see FIG HOW to USE Your TractorTo Transport See Figs To Adjust Gauge Wheels See FigTo Operate Mower See Fig To Operate on HillsADD Gasoline Before Starting the EngineTowing Carts and Other ATTACH- Ments Check Engine OIL LevelPurge Transmission Mowing TipsMulching Mowing Tips General Recommendations Customer ResponsibilitiesBefore Each USE Tractor Engine Muffler Clean AIR INTAKE/COOLING AreasCleaning Engine OIL FilterTo Remove Mower See Fig Service and AdjustmentsTo Install Mower See Fig To Level Mower HousingRecheck side-to-side adjustment To Replace Motion Drive Belt See Fig To Adjust Brake See FigBelt Installation To Replace Mower Blade Drive Belt See FigFront Wheel TOE-IN/CAMBER Transmission REMOVAL/REPLACEMENTTransaxle Motion Control Lever Neutral Adjustment See Fig To Adjust Steering Wheel AlignmentTo Attach Jumper Cables To Start Engine with a Weak Battery See FigReplacing Battery See Figs To Replace Headlight BulbInterlocks and Relays To Adjust CarburetorTo Replace Fuse Engine OIL StorageOther Fuel SystemTroubleshooting Points OFF Tractor - Model Number PR20H42STC SchematicElectrical KEY Part Description Chassis Screw Hex Wshd 8-18 x 7/8 Drive 39 74760648 Bolt 175461 Steering Assembly KEY Part NO. NO.DESCRIPTION Seat Assembly Wheels and Tires DecalsOptional Equipment EngineSpark Arrester 170771 Control Throt Mower Deck Repair Parts Mower Lift 159460 Wire Asm Inner/Sprg W/plunger LT Limited Warranty Sighting Guide Suggested Guide for Sighting Slopes for Safe OperationParts and Service