4.1
Section 4
Air Intake and Air Cleaner System
4
Section 4
Air Cleaner and Air Intake System
Air Cleaner
General
These engines are equipped with a replaceable, high-
density paper air cleaner element. Most are also
equipped with an oiled-foam precleaner which
surrounds the paper element. See Figures 4-1 and 4-2.
Service
Check the air cleaner daily or before starting the
engine. Check for and correct any 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.
Precleaner Service
If so equipped, wash and reoil the precleaner every 25
hours of operation (more often under extremely dusty
or dirty conditions).
To service the precleaner, perform the following steps:
1. Loosen the cover retaining knob and remove the
cover.
2. Remove the foam precleaner from the paper air
cleaner element.
3. Wash the precleaner in warm water with
detergent. Rinse the precleaner thoroughly until
all traces of detergent are eliminated. Squeeze out
excess water (do not wring). Allow the precleaner
to air dry.
4. Saturate the precleaner with new engine oil.
Squeeze out all excess oil.
5. Reinstall the precleaner over the paper air cleaner
element.
6. Reinstall the air cleaner cover. Secure the cover
with the retaining knob.
Figure 4-1. Air Cleaner Housing Components.
Figure 4-2. Air Cleaner Elements.
Air Cleaner
Cover
Air Cleaner
Cover Knob
Air Cleaner Base
Element Cover
Wing Nut
Foam Precleaner
Paper Element
Element
Cover
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