Craftsman 247.795940 manual To DrainOil

To DrainOil:

•Drain oil while engine is warm.

a.Remove oil drain cap. Refer to figure 10. Catch oil in a suitable container.

b.When engine is drained of all oil, replace drain cap securely.

•Refill with fresh oil. Refer to GAS AND OIL FILL- UP section.

•Replace dipstick.

AIR CLEANER

The air cleaner prevents damaging dirt, dust, etc., from entering the carburetor and being forced into the

engine and is important to engine life and per- formance.

Never run your engine without air cleaner com- pletely assembled.

To Service Air Cleaner:

Service pre-cleaner after every 25 hours of use, or at least once a season. Service cartridge every 100 hours of use, or at least once a season. Service pre-cteaner and cartridge more often under dusty conditions.

•Loosen (do not remove) the two screws which secure the cover.

•Turn the cover counterclockwise and remove it from the base.

•Carefully remove pre-cleaner and cartridge.

•Clean the inside of base and cover thoroughly.

•Clean cartridge by tapping gently on a flat surface.

If very dirty, replace cartridge and pre-cleaner or clean as follows:

Wash in a low or non-sudsing detergent and warm water solution. CAUTION: Do not use petroleum solvents such as kerosene to clean cartridge.

Rinse thoroughly with flowing water from inside out until water is clear.

Allow cartridge to stand and air dry thoroughly before using. DO NOT OIL CARTRIDGE OR PRE-

CLEANER. DO NOT USE PRESSURIZED AIR TO CLEAN OR DRY CARTRIDGE.

•Reassemble cover to engine. Tighten the two screws securely.

Base

Filter

Pre-Cleaner

Cover
Screws (2)	Cover

FIGURE 14.

CLEAN ENGINE

Clean engine periodically. Remove dirt and debris

with a cloth or brush. Cleaning with a forceful spray of water is not recommended as water could contami-

nate the fuel system.

Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in figure 15 to avoid overspeeding, overheating and engine damage. Clean more often if necessary.

FLER AREA TO REMOVE ALL GRASS, WARNING: PERIODICALLY CLEAN MUF- DIRT AND COMBUSTIBLE DEBRIS,

LeversAir

and Linkage Intake

FIGURE 15.

SPARK PLUG

The spark plug should be cleaned and the gap reset to .030" at least once a season or every 50 hours of operation. See figure 16. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type.

NOTE: Do not sandblast spark plug. Spark plug should be cleaned by scraping or wire brushing and washing with a commercial solvent.

.030" Feeler Gauge

Spark Plug

FIGURE 16.

MUFFLER

Do not operate the chipper-shredder without a muffler or tamper with the exhaust system. Damaged mufflers or spark attesters could create a fire hazard. Inspect periodically, and replace if necessary. If your engine is equipped with a spark arrester screen assembly, remove every 50 hours for cleaning and inspection. Replace if damaged.

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