Honda CRF450R 2011 Service Manual

CLUTCH/STARTER CLUTCH/KICKSTARTER/GEARSHIFT LINKAGE
Replace the clutch
discs and plates as
8 S8t.
CLUTCH DISCS
Check the clutch discs for signs of scoring or discol ·
oration.
Measure the thickness of each disc.
SERVICE LIMIT : 2.85 mm (0.112 in)
CLUTCH PLATES
Check the plates for excessive warpage or discolor·
ation.
Check the plate warpage on a su rf ace plate using 8
feeler gauge.
Re~e the clutch Measure the thickness of the plates.
drSCSBndpJaresBs SERVICE LIMIT : 0.15 mm (0.006 in )
a ser .
11-10
CLUTCH CENTER
Check the clutch center for nicks, indentations or
abnormal wear made by the clutch plates.
CLUTCH LIFTER/ NEEDLE BEARING
Check the lifter for wear or damage.
Check the needle bearing for wear or damage.
Assemble the clutch lifter, needle bearing and
washer.
Turn the washer wit h your finger and make sure the
needle bearing turns
smoothly.
Replace t he clutch lifter, needle bearing and washer
as a set if necessary.
CLUTCH LIFTER ROD
Check the c lut ch lifter rod for damage and straight-
ness.
CLUTCH DISC
LIFTER ROD
LIFTER
WASHER
,i
•
NEEDLE BEARING

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