Changing Fuel Filter, Changing Air Cleaner

To remove the spark plugs, always use a spark plug wrench. Check the gap after every 100 hours of operation.

Replace a defective plug with a new plug. Set the spark plug gap at .040 inch. Tighten the plug to 18-22 ft-lbs. See your authorized dealer for the correct replacement plug.

Changing Fuel Filter

WARNING: Do not replace the fuel filter when engine is hot.

The engine is equipped with an in-line fuel filter. Visually inspect the filter periodically for a build-up of residue inside the filter body, and for a dirty element which can be indicated by discoloration. Replace the fuel filter when dirty.

Changing Air Cleaner

Air Cleaner

Cover w/Knob

Element Cover

Wing Nut

Element Cover

Rubber Seal

Foam

Precleaner

Paper Element

Air Cleaner Base

Figure 27

Check the air cleaner daily or before starting the engine. Check for loose or damaged components and check the condition of the filter element. Remove any buildup of dirt and debris in the air cleaner housing.

See Figure 27 for assembly of the Aircleaner elements.

WARNING: Operating the engine with loose or dam- aged air cleaner components will allow unfiltered air into the carburetor, causing extensive wear and eventual failure of the engine.

Servicing The Precleaner

Wash and re-oil the foam precleaner more often under extremely dusty or dirty conditions. See Figure 27.

•Loosen the aircleaner cover knob and remove the cover.

•Remove the foam precleaner by sliding it up off the paper element.

•Wash the precleaner in warm water with detergent. Rinse the precleaner thoroughly until all traces of the detergent are eliminated. Squeeze out (do not wring) excess water in a dry cloth. Allow the precleaner to air dry.

•Saturate the foam precleaner with new engine oil. Squeeze out all excess oil in a dry cloth.

•Reinstall the foam precleaner over the paper element.

•Position the air cleaner cover so that the knob engages the stud of the base assembly and tighten the knob