Honda CRF450R 2017 User Manual

54 Servicing Your Honda
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
3
) of clean Pro
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. 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.
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.
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)
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.
12. Install the seat (page 33).
(7) plastic bag
(7)
(2) air cleaner assembly
(8) air cleaner housing stay
(9) “UP” mark tab
(9) (9)
(8)
(2)
(1) air cleaner retaining bolt
(1)
0.(ERRN࣮࣌ࢪ㸰㸮㸯㸴ᖺ㸷᭶㸯᪥ࠉᮌ᭙᪥ࠉ༗ᚋ㸰󰪍㸳㸴ศ

Honda CRF450R 2017 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	13.5:1
Induction	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Transmission	Close-ratio five-speed
Final Drive	#520 Chain; 13T/49T
Rear Suspension	Pro-Link Showa single shock with spring preload, rebound and compression damping adjustability; 12.4 inches travel
Front Brake	Single 260mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-19
Trail	116mm (4.6 inches)
Wheelbase	58.3 inches
Seat Height	37.8 inches
Valve Train	Unicam, 4-valve
Ignition	Full transistorized
Curb Weight	243 pounds