MAINTENANCE
810 Gas/LPG 330160 (3--05)
68
AIR FILTER INDICATOR
The air filter indicator shows when to replace the
air filter element. Check the indicator daily. The
indicator’s red line will move as the air filter
element fills with dirt. Do not replace the air filter
element until the red line reaches
5 kPa (20 in H
2
O) and the ”SERVICE WHEN
RED” window is filled with red. The indicator’s red
line may return to a lower reading on the scale
when the engine shuts off. The red line will return
to a correct reading after the engine runs for a
while.
Reset the air filter indicator by pushing the reset
button on the end of the indicator after replacing
the air filter element.
AIR FILTER
The engine air filter housing has a dust cap and a
dry cartridge-type air filter element. Empty the
dust cap daily. The air filter must be replaced
whenever the filter element is damaged or when
the optional air filter indicator shows a restriction.
The air filters cannot be cleaned.
All machines have a heavy duty safety element
inside the standard element. Replace this
element, do not clean it, after the regular element
has been damaged or changed three times.
Install the dust cap on the air filter housing with
the arrows pointing up.
Replace the air filter element only when the air
filter indicator shows restriction in the air intake
system. Do not remove the air filter element from
the housing unless it is restricting air flow.
FUEL FILTER (GASOLINE)
The fuel filter traps fuel contaminants. On FORD
engines the filter is located on the fuel line going
into the carburetor. On GM engines the filter is
located on the fuel tank.
Replace the filter element on the FORD engine
after every 400 hours of operation.
Replace the filter element on the GM engine serial
number 003179--003999 after every 200 hours of
operation.
Replace the filter element on the GM engine serial
number 004000 and above after every 800 hours
of operation.
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