Briggs & Stratton MB (18 HP) owner manual Cleaning, Clean Cooling Fins and Fan Air Cleaner System

Maintenance Instructions CLEANING

CAUTION

Operating the engine with a blocked air in- take screen, dirty or plugged cooling fins, and/or cooling shrouds removed will cause engine damage from overheating.

Clean these areas of dirt and debris

Clean Cooling Fins and Fan

Air Cleaner System

The engine is equipped with a paper air cleaner ele- ment with an oiled foam pre-cleaner which surrounds the paper element. Clean and re-oil the foam pre-cleaner every 25 hours; more often in

NOTE: Washing the element in water or cleaning solution is not recommended. Replace the element if it does not clean up with compressed air.

•Use a bright light inside the element to inspect for damage. Check the element very carefully for pin holes or other damage that will allow dirt to leak through the paper media. Replace element if nec- essary.

•Use a clean, damp cloth and wipe the interior of the air cleaner body clean. Use special care to clean both the inside and outside surfaces of the outlet tube.

•Install foam pre-cleaner over dry element and re- assemble onto engine. Tighten knob mounting air cleaner element securely, 1/2 to 1 turn after contact- ing cover, but do not over-tighten. Make sure ele- ment is sealed tightly against the element cover and base plate. Reinstall air cleaner cover.

Clips

Cover

Knob

dusty/dirty conditions. Clean the paper element every 100 hours and replace yearly (or when dirty or

Cartridge

Pre-Cleaner

Plate

damaged). Service the air filter as follows:

•Remove air cleaner cover and remove foam pre- cleaner by sliding it off the paper element.

•Wash foam pre-cleaner in liquid detergent and warm water.

•Wrap foam pre-cleaner in cloth and squeeze dry (do not wring).

•Saturate foam in clean engine oil. Squeeze foam to distribute and remove excess oil.

•Remove the paper filter element by pulling it out of the air cleaner body.

•Clean the filter element using low pressure com- pressed air [less than 100 PSI (689 kPa)]. Blow out the filter from the interior of the element while turning the element.

and Cartridge

Foam

Pre-Cleaner

Body

Air Cleaner Components

Grass Buildup in Mower Housing

DANGER

Before raising or removing the mower deck for cleaning, stop the engine, remove the ignition key, and disconnect the spark plug wires.

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