Honda CRF450R 2017 User Manual

Clutch System
Servicing Your Honda 59
Clutch System
Refer to Important Safety Precautions on page 23.
The distance between the tip of the clutch lever and
the grip may be adjusted.
Make sure to adjust the clutch lever freeplay after
the clutch lever position is adjusted or clutch cable
is disconnected.
1. Loosen the lock nut (1).
2. To position the clutch lever farther away from
the handgrip, turn the adjuster (2)
counterclockwise. To position the clutch lever
closer to the handgrip, turn the adjuster
clockwise.
3. Tighten the lock nut.
4. Recheck clutch lever freeplay and adjust as
necessary (this page).
Inspection
Check freeplay (1).
Freeplay: 3/8 – 13/16 in (10 – 20 mm)
If necessary, adjust to the specified range.
Improper freeplay adjustment can cause premature
clutch wear.
Make sure to adjust the clutch lever freeplay after
the clutch cable is disconnected.
Cable End Adjustment
Minor adjustments are generally made with the
clutch cable end adjuster.
Turning the cable end adjuster (1) in direction (+)
will increase freeplay and turning it in direction (–)
will decrease freeplay.
If the adjuster is threaded out near its limit or the
correct freeplay cannot be reached, turn the
adjuster all the way in and back out five turns and
make the adjustment with the integral cable
adjuster.
Clutch Lever Adjustment
(1) lock nut
(2) adjuster
(1)
(2)
Clutch Lever Freeplay
(1) freeplay
(1)
(1) cable end adjuster
(+) increase freeplay
(–) decrease freeplay
(1)
(–)
(+)
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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