Honda CRF450R 2017 Owner's Manual & Competition Handbook page 59

Air Cleaner
4. Wash the air cleaner 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.
5. Clean the inside of the air cleaner housing.
6. Allow the air cleaner to dry thoroughly. After
drying, apply 1.4 US oz (40 cm
Honda Foam Air Filter Oil or an equivalent air
cleaner oil from the inside of the element.
Place the element into a plastic bag (7) and
spread the oil evenly by hand.
(7)
(7) plastic bag
54
Servicing Your Honda
7. Assemble the air cleaner element and holder.
Install the holder tabs in the holes of the air
cleaner element.
8. Apply 0.05 – 0.19 oz (1.5 – 5.5 g) of Pro Honda
Foam Air Filter Sealer or equivalent to the air
cleaner element contact area of the air cleaner
housing.
3 ) of clean Pro 9. Install the air cleaner assembly (2) into the air
cleaner housing stay (8) with the "UP" mark
tab (9) facing up.
10. Carefully position the sealing flange of the
element to prevent dirt intrusion.
(9)
(8)
(2) air cleaner assembly
(8) air cleaner housing stay
(9) "UP" mark tab
11. Install and tighten the air cleaner retaining bolt
(1) to the specified torque:
1.8 lbf·ft (2.4 N·m, 0.2 kgf·m)
(9)
(1)
(1) air cleaner retaining bolt
NOTICE
Improper installation of the air cleaner assembly
may allow dirt and dust to enter the engine and
cause rapid wear of the piston rings and cylinder.
(2)
12. Install the seat (page 33).