Honda CRF450R 2011 Service Manual

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FUEL SYSTEM
Damage to t he pilot
screw seal will
occur if the pilot
screw is tightened
against the seat.
6-28
IDLE DROP PROCEDURE ('05 and '06
California
type, '07, After '07)
1. Turn the pilot screw clockwise until it seats
lightly, and then back it out to the specification
given.
TOOL:
Pilot screw w rench 1'05, '06) 07908 - 4730002
(After '06) 07KMA-MS60102
INITIAL OPENING:
'05 a nd '06 California type, '07:1-114 turns out
After '01: 1- 118 turns out
2. Warm the engine up to operating temperaturB.
Stop and go riding for 10 minutes is sufficient.
3. Stop the engine and connect a tachometer
according to its manufacturer's instruction.
4. Disconnect the PAIR control val ve vacuum hose
and plug it to keep air from entering, then con-
nect the vacuum pump to the PAIR control valve
vacuum hose joint .
5.
Apply the specified vacuum to the PAIR control
valve
vacuum hose more than 56 kPa (420
mmHg).
6. Start the engine and adjust the idle speed with
the throttle stop screw.
IDLE SPEED: 1,700 ± 100 rpm
VACUUM HOSE
PAIRC:ONTR(iLVAL VE

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