AIR Cleaner, Clean Engine, Spark Plug, Muffler

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-cleanerafter every 25 hours of use, or at least once a season. Replace filter every 100 hours of use, or at least once a season. Service pro-cleaner and filter more often under dusty conditions.

•Remove wing nut and cover. See figure 15.

•Slide pre-cleaner off filter. Clean the inside of base and cover thoroughly.

•Clean pre-cleaner as follows.

Wash in water and detergent solution, and squeeze (do not twist) until air dirt is removed.

Rinse thoroughly in clear water.

Wrap in a clean cloth and squeeze (do not twist) until completely dry, or allow to air dry.

eIf necessary, replace filter (do not attempt to ctean).

•Install new filter on base. Slide pre-cleaner over filter.

•Install cover and wing nut. Tighten wing nut securely.

Base	Filter	Pre-Cleaner	Wing
	I		Nut

Cover

FIGURE 15.

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 air intake screen and blower housing, and clean the areas shown in figure 16 to avoid over- speeding, overheating and engine damage. Clean more often if necessary.

FLER AREA TO REMOVE ALL GRASS, WARNING:DIRT AND COMBUSTIBLEPERIODICALLY DEBRISCLEAN. MUF_

Cool

FIGURE 16.

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 17. 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.

Feeler Gauge

Plug

FIGURE 17.

MUFFLER

Do not operate the chipper-vacuum without a muffler or tamper with the exhaust system. Damaged mufflers or spark arrestors 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.