21
P
OWER
B
LOWER
O
PERATOR
'
S
M
ANUAL
AIR
FILTER
Level 1.
Tools required:
25 - 50mm (1 - 2 in.) cleaning brush
Parts required:
Tune Up Kit
NOTE
Always brush dirt and debris away from air cleaner area prior to
cleaning air filter.
1. Brush dirt off air cleaner area. Keep dirt away from engine and air
intake grid.
2. Remove air filter cover. Brush dirt from inside cover and away
from edges of air filter.
3. Check air filter seal for tight fit with air filter case.
4. Remove air filter from case. Use care to prevent dirt and debris
from falling into air filter case.
5. Inspect filter element and seal. Replace filter if any of these
problems are present:
•Air filter seal does not fit tightly against case
•Air filter seal is distorted, worn, or damaged
•Air filter element has holes or other damage
•Air filter element is saturated with dirt
•Air filter element is soaked with fuel mix
6. If air filter is in good condition and can be cleaned and reused,
lightly brush debris from air filter element, or blow filter element
clean using low pressure (40 psi or less) compressed air directed
at inside of filter.
IMPORTANT
When using compressed air, always direct air stream at inside
surface of filter so dust and debris will be blown out of filter.
Keep air nozzle 6 - 8 inches away from filter to prevent damage to
filter.
7. Clean the foam filter in water/detergent solution. Wrap the foam
filter in a clean cloth and squeeze (Do not wring) dry.
NOTICE
Actual replacement interval for air filter depends on operating
conditions. Operation in dustier applications requires more
frequent cleaning and replacement. Continued operation with a
damaged or excessively dirty filter will allow dirt and debris to
enter engine, and result in poor performance, rapid engine wear,
and premature engine failure.
8. Assemble components in reverse order.
Summary of Contents for PB-770H
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