Cleaning, Muffler, Spark Plugs | Sears 917.251551 guide

Sears 917.251551 manual Cleaning, Muffler, Spark Plugs

CUSTOME ESPON

CLEAN AIR SCREEN (See Fig. 15)

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

CLEAN AIR INTAKEtCOOLING 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 re- moved 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 opera- tion 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.

o Loosen knob and remove cover

TO SERVICE PRE-CLEANER

oSlide foam pre-cteaner off cartridge. ° Wash it in liquid detergent and water. ° Squeeze it dry in a clean cloth°

oSaturate it in engine oil. Wrap it in clean, absorbent cloth and squeeze to remove excess oil°

TO SERVICE CARTRIDGE

o Remove nut and cartridge plate.

°Gently tap the flat side of the paper cartridge to dis- lodge dirt.. Do not wash the paper cartridge or use pressurized air, as this will damage the cartridge. Replace a dirty, bent, or damaged cartridge_

•Reinstall the pre-cleaner (cleaned,and oiled) over the paper cartridge

•Check rubber seal for damage and proper position around stud Replace if necessary.

•Reassemble air cleaner, cartridge plate, and nut.

•Reinstall air cleaner cover and secure by tightening knob..

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 comes first. Spark plug type and gap setting are shown in "PRODUCT SPECIFICATIONS" on page 3 of this manual

ENGINE OIL FILTER

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

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 sections.

°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°

FIG, 17

CLEANING

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

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

°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

PRE-CLEANER

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FIG. 16