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4.4
Section 4
Air Cleaner and Air Intake System
Air Cleaner Components
Whenever the air cleaner cover is removed, or the
paper element or precleaner are serviced, check the
following:
Air Cleaner Element Cover and Seal - Make sure
element cover is not bent or damaged. Make sure the
rubber sleeve seal is in place on the stud to prevent
dust or dirt entry through the stud hole.
Air Cleaner Base - Make sure the base is secured
tightly to the carburetor and not cracked or damaged.
Breather Tube - Make sure the tube is attached to both
the air cleaner base and the oil separator.
NOTE: Damaged, worn or loose air cleaner
components can allow unfiltered air into the
engine causing premature wear and failure.
Tighten or replace all loose or damaged
components.
Figure 4-7. Base Plate Removal on Standard Type.
Disassembly/Reassembly - Standard Type
If the base plate on the standard type has to be
removed, proceed as follows:
1. Remove the air cleaner components from the base
(see Figure 4-5).
2. Remove the two hex flange nuts securing the
bracket, or spitback cup with seal and baffle (if
equipped) to base. If a plastic intake manifold is
used, remove the two lower base mounting
screws. See Figure 4-7.
3. Pinch the sealing collar on the breather hose and
push it down through the hole in the base.
Figure 4-8. Removing Base on Commercial Mower
Type Air Cleaner.
Disassembly/Reassembly - Commercial Mower Type
If the base has to be separated from the carburetor
proceed as follows:
1. Remove the air cleaner components from the air
cleaner base (see Figure 4-6).
2. Remove the two nuts holding the air cleaner base
to the carburetor (see Figure 4-8).
3. Remove the tube from the base.
4. Separate the base from the carburetor.
5. Reverse procedure to reassemble components.
Torque air cleaner base mounting nuts to
6.2-7.3 N·m (55-65 in. lb.).
4. Remove the base and gasket. Carefully feed the
breather hose through the base.
5. Reverse procedure to reassemble components.
Torque the two hex flange nuts to 6.2-7.3 N·m
(55-65 in. lb.) and the two lower M5 mounting
screws (where applicable) to 4.0 N·m (35 in. lb.).
Mounting
Nuts (2)
Breather Hose
Baffle
Seal
Lower Base
Mounting Screws
Base