272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

AIR CLEANER SERVICE
WARNING
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AVOID FIRES!
• Never operate an engine with the air cleaner
assembly or air cleaner cartridge removed!
A properly serviced air cleaner protects internal engine
parts from airborne dirt and dust particles. If air
cleaner instructions are not followed, particles that
should be collected in the air cleaner will pass into
the engine. These particles are abrasive and will
cause the piston rings and cylinder bore to wear
quickly. As the rings and bore wear, the abrasive particles
enter the crankcase and contaminate the oil,
forming an abrasive mixture that will wear internal
parts.
Fig. 1
Examine the air cleaner on every engine brought in
for a check up or repair. If the air cleaner shows signs
of neglect, show it to the customer before cleaning.
Instruct the customer on proper care to assure long
engine life.
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NOTE: Replace worn or damaged air cleaner gaskets
and mounting gaskets to prevent dirt
and dust from entering engine through improper
sealing. Replace air cleaner mounting
bracket if bent.
ÑÑ
Remove and service foam pre-cleaner, if equipped,
every 25 hours or every season, whichever occurs
first. Service cartridge every 100 hours or every season,
whichever occurs first.
NOTE: Service air cleaner more often under dusty
conditions.
Fig. 2
Round Air Cleaner
1. Remove cover (1), knob (2), plate (3), and air
cleaner cartridge (4) with pre-cleaner (5), Fig. 1
or Fig. 2.
2. Remove foam pre-cleaner from cartridge.
3. Wash pre-cleaner in liquid detergent and water.
4. Squeeze dry in a clean cloth. Set aside.
5. Inspect cartridge. Replace if damaged or dirty.
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