Honda CBR125RW - Service manual > Injector

QUICK CONNECT FITTING REMOVAL

• Always clean around the injector before the injector removal to prevent dirt and debris from entering the injector passage.

Relieve the fuel pressure and disconnect the quick connect fitting.

Disconnect the injector joint quick connect fitting as follows.

1. Pull and release the connector damper tabs from the retainer when disconnecting the injector joint quick connect fitting.

2. Hold the connector with one hand and squeeze the retainer tabs with the other hand to release them from the locking pawls.

Pull the connector off and remove the retainer.

NOTE:

• Absorb the remaining fuel in the fuel feed hose from flowing out with a shop towel.
• Be careful not to damage the hose or other parts.
• Do not use tools.
• If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily.

3. To prevent damage and keep foreign matter out, cover the disconnected connector and pipe end with the plastic bags.

REMOVAL

Disconnect the injector 2P (Black) connector.

Remove the bolts and injector assembly from the throttle body.

Remove the injector joint, O-ring and seal ring from the injector.

Check the removed parts for wear or damage and replace them if necessary.

INSTALLATION

Apply engine oil to new O-ring and seal ring.

Install the O-ring and seal ring to the injector, being careful not to damage them.

Install the injector into the injector joint, being careful not to damage the O-ring.

NOTE:

Align the injector body with the injector joint tab as shown.

Be careful not to damage the seal ring.

Install the injector assembly to the throttle body.

Install and tighten the injector joint mounting bolts alternately to the specified torque.

TORQUE: 5.1 N-m (0.5 kgf-m, 3.8 lbf-ft)

Connect the injector 2P (Black) connector.

QUICK CONNECT FITTING INSTALLATION

• Always replace the retainer of the quick connect fitting when the fuel feed hose is disconnected.
• If any retainer needs replacing, use the same manufacturer's retainer as the ones being removed (The various manufactures feature different retainer specifications).
• If any damage or cut-out on the connector damper, replace it with a new one.
• Do not bend or twist the fuel feed hose.

Connect the injector joint quick connect fitting as follows:

1. Insert a new retainer into the connector.

NOTE:

• Align new retainer locking pawls with the connector grooves.

2. Set the connector damper as shown.

Then press the quick connect fitting onto the pipe until both retainer pawls lock with a "CLICK".

NOTE:

• Align the quick connect fitting with the injector joint.

  If it is hard to connect, put a small amount of engine oil on the injector joint.

3. Make sure the connection is secure and that the pawls are firmly locked into place; check visually and by pulling the connector.

4. Make sure the connector damper tabs are in place (between the retainer tabs).

Remove the suitable support and close the fuel tank.

ENGINE IDLE SPEED

NOTE:

• Inspect the idle speed after all other engine maintenance items have been performed and are within specifications.
• Before checking the idle speed, inspect the following items.
  • No DTC and MIL blinking
  • Spark plug condition
  • Air cleaner element condition
• The engine must be warm for accurate idle speed inspection.
• This system eliminates the need for manual idle speed adjustment compared to previous designs.

Turn the ignition switch ON (and engine stop switch "": CM and U type).

Start the engine and let it idle.

Check the idle speed.

IDLE SPEED: 1,450 +- 100 min-1 (rpm)

If the idle speed is out of the specification, check the following:

• Intake air leak or engine top-end problem
• Throttle operation and freeplay
• IACV operation

See also: