SECTION V MAINTENANCE
Air filter
Air filtering occurs by means of a folded paper element protected by a
container and held in a sheet metal cylinder.
WARNING: the internal cartridge of the filter does not perform any
filtration function. Its function is to prevent solid particles from entering the
inlet manifold when the filter cartridge is removed. The inner safety
element should never be cleaned but only replaced every three cleanings
of the main cartridge.
Periodically: check the efficiency of the air filter dust exhausting valve.
Air filter
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NOTE: Check regularly that the engine air cleaner casing and element are
not damaged. Do not wash or brush the element.
NOTE: Periodically inspect air cleaner housing and element.
NOTE: The small inner secondary safety filter must never be used without
the larger outer primary filter being in place. The purpose of the secondary
safety filter is to serve as a backup to the primary and prevent dust or other
items from entering while the primary is being cleaned or replaced.