Honda CBR650 - Service manual > Throttle body

REMOVAL/INSTALLATION

NOTE:

• Always clean around the fuel system parts with compressed air before removing to prevent dirt and debris from entering the air passages in the throttle body.

Remove the air cleaner housing.

Disconnect the following:

• Fuel injector sub harness 6P (Black) connector [1]
• IACV 4P (Black) connector [2]
• TP sensor 3P (Blue) connector [3]
• EVAP vacuum hose [4] from the hose joint [5] (TH model only)

Loosen the throttle cable A adjuster lock nut [1].

Loosen the throttle cable B lock nut [2] then disconnect the throttle cable B [3] from the throttle drum and cable stay.

Loosen the four insulator band screws (throttle body side) [1].

Slide the throttle body assembly upward and release it off of the insulators.

Disconnect the throttle cable A [1] from the throttle drum and cable stay.

Installation is in the reverse order of removal.

NOTE:

• Tighten the insulator band screw [1] until the band seats on the collar (9 mm) [2], then tighten it to the specified torque.

TORQUE:
 Insulator band screw:
  4.5 N*m (0.5 kgf*m, 3.3 lbf*ft)
 Throttle cable B lock nut:
  5.5 N*m (0.6 kgf*m, 4.1 lbf*ft)

Adjust the throttle grip freeplay.

DISASSEMBLY/ASSEMBLY

NOTE:

• The throttle body is factory pre-set. Do not disassemble in a way other than shown in this manual.
• Do not snap the throttle valve from full open to full close after the throttle cable has been removed. It may cause incorrect idle operation.
• Do not damage the throttle body. It may cause incorrect throttle valve operation.
• Do not loosen or tighten the white painted [1] bolts, nuts, screws and air screws [2]. Loosening or tightening them can cause throttle body malfunction.

Remove the following:

• IACV
• Fuel injector

Clean the air passages in the throttle body and IACV body with compressed air.

NOTE:

• Cleaning with the a piece of wire will damage the throttle body.

Insulator

REMOVAL/INSTALLATION

Remove the following:

• Throttle body
• Cam chain tensioner lifter

Loosen the band screws [1] and remove the insulators [2].

Installation is in the reverse order of removal.

• Align the insulator grooves with the tabs of the cylinder head.
• Tighten the insulator band screw until the band seat on the collar (7 mm) [3], then tighten it to the specified torque.

TORQUE:
 Insulator band screw:
  4.5 N*m (0.5 kgf*m, 3.3 lbf*ft)

See also: