Honda CRF450R 2017 User Manual

Fuel System
(cont’d)
Servicing Your Honda 39
1. Hang the fuel tank to the left side of the frame
(page 34).
2. Disconnect the fuel pump connector (1).
3. Reposition the fuel tank and start the engine
and let it idle until the engine stalls.
Disconnection
1. Relieve the fuel pressure (this page).
2. Hang the fuel tank to the left side of the frame.
3. Remove the fuel quick connect fitting cover
(1) from the fuel pump (2).
4. Check the fuel quick connect fitting (3) for
dirt, and clean if necessary.
5. Remove the bolt (4), clamp and setting rubber
(5).
6. Place a shop towel (6) over the fuel quick
connect fitting.
Fuel Pressure Relieving
(1) fuel pump connector
(1)
Fuel Line Replacement
(1) fuel quick connect fitting cover
(2) fuel pump
(3) fuel quick connect fitting
(4) bolt (5) clamp and setting rubber
(1)
(2)(3)
Fuel Pump side:Injector side:
(4)
(5)
(6) shop towel
Injector side:
Fuel Pump side:
(6)
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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