Hisun HS500 Owner's Manual page 132

1. Crankcase breather hose
13. Install the console.
14. Install the seats.
NOTE:
The air filter element should be cleaned
every 20-40 hours. It should be cleaned and
lubricated more often if the vehicle is
operated in extremely dusty areas. Each time
air filter element maintenance is performed,
check the air inlet to the air filter case for
obstructions. Check the air filter
Periodic Maintenance and Adjustment
element rubber joint to the fuel system and
manifold fittings securely to avoid the
possibility of unfiltered air entering the
engine.
CAUTION:
Never operate the engine with the air filter
element removed. This will allow unfiltered
air to enter, causing rapid engine wear and
possible engine damage. Additionally,
operation without the air filter element will
affect performance with subsequent poor
performance and possible engine
overheating.
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