4.2
Section 4
Air Cleaner and Air Intake System
Paper Element Service
Every
100 hours
of operation (more often under
extremely dusty or dirty conditions), replace the paper
element. Follow these steps:
1. Loosen the cover retaining knob and remove the
cover.
2. Remove the wing nut, element cover, and air
cleaner element.
3. Remove the precleaner (if so equipped) from the
paper element. Service the precleaner as
described in “Precleaner Service”.
4.
Do not wash the paper element or use
pressurized air,
as this will damage the element.
Replace a dirty, bent, or damaged element with a
genuine Kohler element. Handle new elements
carefully; do not use if the sealing surfaces are
bent or damaged.
5. Check the rubber sleeve seal for any damage or
deterioration. Replace as necessary. A new seal
comes packed with each replacement element.
6. Reinstall the paper element, precleaner, element
cover, and wing nut.
7. Reinstall the air cleaner cover and secure with the
two latches or the retaining knob.
Inspect Air Cleaner Components
Whenever the air cleaner cover is removed, or the
paper element or precleaner are serviced, check the
following areas/components:
Air Cleaner Base -
Make sure the base is secured and
not cracked or damaged. Since the air cleaner base and
carburetor are secured to the intake port with
common hardware, it is extremely important that the
nuts securing these components are tight at all times.
Breather Tube -
Make sure the breather tube is
installed to both the air cleaner base and valve cover.
Disassembly
The following procedure is for complete disassembly
of all air cleaner components.
1. Loosen the air cleaner cover retaining knob and
remove the air cleaner cover.
2. Remove the wing nut, element cover, and air
cleaner element.
3. If so equipped, remove the precleaner from the
paper element.
4. Disconnect the breather hose from the valve
cover.
5. Remove the air cleaner base mounting nuts, air
cleaner base, and gasket.
6. If necessary, remove the self-tapping screws and
elbow from air cleaner base.
Reassembly
The following procedure is for complete assembly of
all air cleaner components.
1. Install the elbow and self-tapping screws to air
cleaner base.
2. Install the gasket, air cleaner base, and base
mounting nuts. Torque the nuts to
9.9 N·m
(88 in. lb.)
.
3. Connect the breather hose to the valve cover (and
air cleaner base). Secure with hose clamps.
4. If so equipped, install the precleaner (washed and
oiled) over the paper element.
5. Install the air cleaner element, element cover, and
wing nut.
6. Install the air cleaner cover and air cleaner cover
retaining knob. Tighten the knob securely.
Air Intake/Cooling System
To ensure proper cooling, make sure the grass screen,
cooling fins, and other external surfaces of the engine
are kept clean
at all times
.
Every
100 hours
of operation (more often under
extremely dusty or dirty conditions), remove the
blower housing and other cooling shrouds. Clean the
cooling fins and external surfaces as necessary. Make
sure the cooling shrouds are reinstalled.
NOTE:
Operating the engine with a blocked grass
screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, will cause engine
damage due to overheating.