Honda CRF450L 2019 User Manual

118 Servicing Your Honda
Suspension
17. Blow out any oil from the oil hole (10) of the
fork damper assembly (4) using compressed
air.
Wipe off the oil completely from the fork
damper.
18. If your cannot use compressed air, remove the
fork air pressure release screws (12) from the
fork bolt assembly.
Hold the fork damper upside down for 20
minutes and drain the fork oil.
Apply recommended fork oil to a new O-ring
(13), and then install a new O-rings on the air
pressure release screws (12).
Tighten the air pressure release screws to the
specified torque:
1.0 lbf·ft (1.3 N·m, 0.1 kgf·m)
19. Fully stroke the piston rod (2) by pushing
down the fork damper assembly (4).
Check the piston rod for smooth operation.
If the piston rod operation is not smooth, check
the piston rod for bends or damage.
1. Drain the fork oil from the fork assembly (1)
by placing it upside down.
(About (0.2 US oz (5.4 cm
3
) of fork oil will be
left in the fork assembly when it is left inverted
for about 20 minutes at 20 °C/68 °F)
To properly dispose of drained fluids, refer to You
& the Environment on page 160.
NOTICE
Improper disposal of drained fluids is harmful to
the environment.
(4) fork damper assembly
(10) oil hole
(12) air pressure release screws
(13) O-rings (new)
(4)
(10) (12) (13)
(2) fork damper piston rod
(4) fork damper assembly
(4)
(2)
Fork Damper Installation
(1) fork assembly
Amount of fork oil left in the fork
(without damper and spring) unit: cm
3
minute
°C/°F
5 1020355585145
30/86 6.5 5.7 5.2 4.5 4.1 3.7 3.3
20/68 6.7 6.2 5.4 4.7 4.4 3.8 3.5
10/50 7.3 6.4 5.6 5 4.6 4.2 3.8
0/32 8.6 8.2 7.9 7.6 7.3 6.8 6
(1)

Honda CRF450L 2019 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Fuel System	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Transmission	6-speed
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-18
Rake (Caster Angle)	28.5°
Wheelbase	58.9 inches
Seat Height	37.1 inches
Fuel Capacity	2.0 gallons
Ignition	Full transistorized ignition
Ground Clearance	12.4 inches
Front Suspension	49mm inverted fork; 12.0 inches of travel
Rear Suspension	Pro-Link Showa single shock, adjustable spring preload, compression and rebound damping
Front Brake	Single 260mm disc
Curb Weight	289 pounds
Valve Train	Unicam four-valve
Final Drive	Chain
Trail	4.6 inches (118mm)