Honda CRF450X - Air Cleaner

Air Cleaner
Refer to Safety Precautions on page 25.
The air cleaner uses polyurethane inner and outer
pieces which can’t be separated.
A dirty air cleaner will reduce engine power.
Proper air cleaner maintenance is very important
for off-road vehicles. A dirty, water-soaked,
worn-out, or defective air cleaner will allow dirt,
dust, mud, and other impurities to pass into the
engine.
Service the air cleaner more frequently if you
ride in unusually wet or dusty areas. Your Honda
dealer can help you determine the correct service
interval for your riding conditions.
Your CRF’s air cleaner has very specific
performance requirements. Use a new genuine
Honda air cleaner specified for your model or an
air cleaner of equal quality.
Proper air cleaner maintenance can prevent
premature engine wear or damage, expensive
repairs, low engine power, poor gas mileage, and
spark plug fouling.
Improper or lack of proper air cleaner
maintenance can cause poor performance and
premature engine wear.
NOTICE
Cleaning
1. Open the air cleaner housing cover (1) by
turning the quick fastener (2)
counterclockwise.
4. Remove the air cleaner element (5) out from
the air cleaner holder (6).
(1) air cleaner housing cover
(2) quick fastener
2. Remove the air cleaner retaining bolt (3).
3. Remove the air cleaner assembly (4) while
turning the cleaner assembly clockwise.
(5) air cleaner element (8) hole
(6) air cleaner holder (9) air cleaner element tab
(7) tab
5. Wash the air cleaner element in clean non-
flammable cleaning solvent. Then wash in
hot, soapy water, rinse well, and allow to dry
thoroughly.
The air cleaner element is made in two pieces:
inner and outer, which cannot be separated.
6. Clean the inside of the air cleaner housing.
7. Allow the air cleaner element to dry
thoroughly. After drying, soak the air cleaner
element in clean Honda Foam Air Filter Oil or
an equivalent air cleaner oil.
Apply air cleaner oil to the entire surface of
the air cleaner element and rub it with both
hands to saturate the air cleaner with oil.
Squeeze out excess oil.
(cont’d)
(3) air cleaner retaining bolt
(4) air cleaner assembly
Servicing Your Honda 51
(2)
(1)
(4)
(3)
(9)
(7)
(5)
(6)
(8)
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