4.1
Section 4
Air Intake and Air Cleaner System
4
Section 4
Air Cleaner and Air Intake System
Air Cleaners
General
These engines are equipped with one of three air
cleaner configurations; the standard dual-element air
cleaner assembly, an optional heavy-duty cyclonic air
cleaner assembly, or a third design which uses an
oiled, solid foam element. The first two styles have a
replaceable, high-density paper element surrounded
by an oiled-foam precleaner. See Figures 4-1 and 4-2.
Servicing information for these two styles is on pages
4.1 through 4.4. The third design does not use a paper
element, just the foam. See Figure 4-14. Servicing
information for the third design is on page 4.5. The
heavy-duty air cleaner assemblies also contain a lower
swirl chamber which separates the dirt particles from
the incoming air for extended service intervals.
Figure 4-2. Heavy-Duty, Cyclonic Air Cleaner.
Service
Check the air cleaner daily or before starting the
engine. Check for buildup of dirt and debris, along
with loose or damaged components.
NOTE: Operating the engine with loose or damaged
air cleaner components could allow
unfiltered air into the engine causing
premature wear and failure.
Figure 4-1. Standard Dual-Element Air Cleaner.
Figure 4-3. Removing Cover Knob Standard.
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