4.1
Section 4
Air Cleaner and Air Intake System
4
Section 4
Air Cleaner and Air Intake System
Air Cleaners
General
These engines use a heavy-duty style air cleaner as
shown in Figure 4-1, consisting of a cylindrical
housing attached to the carburetor and intake
manifold. The air cleaner housing contains a paper
element and inner element, designed for longer
service intervals. The system is CARB/EPA certified
and the components should not be altered or modified
in any way.
Heavy-Duty Style Air Cleaner
2. Check and clean the screen area on the inlet side.
Pull the air cleaner paper element out of the
housing on opposite side. See Figures 4-2 and 4-3.
Figure 4-1. Heavy-Duty Style Air Cleaner.
Service
Weekly and every 150 hours:
Check filter minder (if
equipped), unhook the two retaining clips on each end
and remove the end caps. Perform inspection of the
paper element and inlet screen area.
Seasonally or every 300 hours
of operation (more
often under extremely dusty or dirty conditions),
replace the paper element and check the inner
element. Follow these steps.
1. Unhook the two retaining clips on each end and
remove the end caps from the air cleaner
housing.
Figure 4-2. Accessing Inlet Screen.
Figure 4-3. Removing Elements.
3. After the paper element is removed, check the
condition of the inner element. It should be
replaced whenever it appears dirty, typically
every other time the paper element is replaced or
every
600 hours
. Clean the area around the base
of the inner element before removing it, so dirt
does not get into the engine.
Inlet Screen
Inner
Element
Paper Element
