Honda CRF450R 2011 Service Manual

CRANKCASE/CRANKSHAFT/TRANSMISSION/BALANCER
13-12
INSPECTION
GEAR
Check the gear dogs , dog holders and teeth for
damage or excessive wear.
Measure the I .D. of each gear.
SERVICE LIMITS:
M4 : 28.05 mm 11,104 in)
M5: ' 05 - ' 07 : 25.07 mm (0.987 in)
After '07:28.07 mm (1 .105 in)
C1 : 22.04 mm (0 .868 in)
C2: 30 .07 mm (1.184 in)
C3 : '05 - ' 07 : 25.07 mm (0.981 in)
After '07 :2 8.07 mm (1.105 in)
BUSHING
Check the bushings for damage or excessive wear.
Measure the
O.D. of each bushing.
SERVICE LIMITS:
M4: 27.94 mm (1.100 in)
C2: 29.95 mm (1 .179 in)
After
' 07 :
M5: 27 . 94 mm (1 . 100 in)
C3: 27.95 mm (1 . 100 in)
Measure the I.D. of each bushing.
SERVICE LIMITS:
C2: 27.04 mm (1 .065 in)
After '07:
MS /C3: 25.04 mm (0.9858 in)
Measure the gear to bushing clearance.
SERVICE LIMITS:
M4 : 0. 11 mm (0.004 in)
C2: 0.12 mm (0.005 in)
After '07:
M5/C3: 0.12 mm (0 .005 in)
NEEDLE BEARING
Check the C1 gear needle bearing for damage.
Replace it if necessary.
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Honda CRF450R 2011 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Transmission	Close-ratio five-speed
Final Drive	#520 chain; 13T/48T
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-19
Trail	114mm (4.5 inches)
Induction	PGM-FI, 46mm throttle body
Front Suspension	48mm inverted with rebound and compression damping adjustability; 12.2 inches travel
Rear Suspension	Pro-Link single shock with rebound and compression damping adjustability; 12.4 inches of travel
Wheelbase	58.7 inches
Seat Height	37.6 inches
Fuel Capacity	1.5 gallons