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Honda CRF450X User Manual

Honda CRF450X
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Servicing Your Honda 87
Brakes
Refer to Safety Precautions on page 25.
Both the front and rear brakes are the hydraulic
disc type. As the brake pads wear, the brake
fluid level will drop. A leak in the system will
also cause the level to drop.
Frequently inspect the system to ensure there are
no fluid leaks. Periodically inspect the brake
fluid level and the brake pads for wear.
If the front brake lever or rear brake pedal
freeplay does not feel within the normal range
while riding, check the brake pads. If they are
not worn beyond the recommended limit (page
90), there is probably air in the brake system.
Refer to the Honda Service Manual or see your
Honda dealer to have the air bled from the
system.
(1) lock nut (3) piston
(2) adjuster
Front Brake Lever Adjustment
1. Loosen the lock nut (1).
2. To position the brake lever farther away from
the handgrip, turn the adjuster (2) clockwise.
To position the brake lever closer to the
handgrip, turn the adjuster counterclockwise.
3. Tighten the lock nut.
4. Apply the brake, release it, then spin the
wheel and check that it rotates freely. Repeat
this procedure several times.
5. Check freeplay by pulling in slowly on the
front brake lever until the brake starts to
engage.
Freeplay
:3/8 3/4 in (10 – 20 mm)
6. Apply grease to the contacting faces of the
adjuster and piston (3).
Rear Brake Pedal Height
The brake pedal height should be approximately
level with the right footpeg.
1. Loosen the lock nut (1) and turn the adjusting
bolt (2) in direction (+) to raise the pedal (3)
or in direction (–) to lower it.
2. Tighten the lock nut to the specified torque at
the desired pedal height.
4.4 lbf·ft (5.9 N·m, 0.6 kgf·m)
(1) lock nut (+) raise the pedal height
(2) adjusting bolt (–) lower the pedal height
(3) brake pedal
LESS
THAN
3/8–3/4 in
(10–20 mm)
(1)
(2)
(3)
(2)
(1)
(3)
(+)
(–)

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Honda CRF450X Specifications

General IconGeneral
Engine Type449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke96.0mm x 62.1mm
Compression Ratio12.0:1
InductionProgrammed Fuel Injection (PGM-FI), 46mm throttle body
Front BrakeSingle 240mm disc with twin-piston caliper
Rear BrakeSingle 240mm disc
Front Tire80/100-21
Rear Tire110/100-18
Wheelbase58.3 inches
Fuel Capacity2.0 gallons
Final Drive#520 chain; 13T/51T
Front Suspension49mm leading-axle inverted telescopic Showa fork; fully adjustable
Rear SuspensionPro-Link Showa single shock with spring preload adjustability
Trail4.6 inches
Curb Weight275 pounds (Includes all standard equipment, required fluids and a full tank of fuel—ready to ride)
Rake27.0°

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