Kawasaki STX-15F service manual Throttle Body Assy

3-72 FUEL SYSTEM (DFI)

Throttle Body Assy

Idle Speed Inspection

The normal idle speed is controlled by the ECU (Elec- tronic Control Unit).

Idle Speed

Standard: 1 300 ±100 r/min (rpm) -both in and out of water

High Altitude Performance Adjustment

High altitude adjustment is not required as the ECU con- trols the air/fuel mixture automatically.

Throttle Body Assy Removal

•Remove:

Seat (see Hull/Engine Hood chapter)

Air Filter (from Throttle Body Assy)

Throttle Cable [A] (see Throttle Cable Removal)

Air Inlet Duct

ISC (Idle Speed Controller) Connector [B]

Throttle Sensor Connector [C]

Throttle Body Assy Mounting Bolts [D]

Throttle Body Assy [E]

Gasket

Throttle Body Assy Installation

•Install a new gasket.

•Tighten:

Torque - Throttle Body Assy Mounting Bolts: 20 N·m (2.0 kgf·m, 14 ft·lb)

•Install the throttle cable and adjust the free play.

•Bind the harness [A] and connector in the band [B].

•Route the harness [C] and tighten the band [D] correctly (see Appendix chapter).

Throttle Body Assy Disassembly

CAUTION

Do not disassemble or adjust, the air screw, throt- tle link mechanism and throttle body assy [A], be- cause they are adjusted or set surely at the man- ufacturer. Adjustment of these parts could result in poor performance, requiring replacement of the throttle body assy.

Throttle Bore Cleaning

•Remove the throttle body assy (see Throttle Body Assy Removal).

•Check the throttle bore [A] for carbon deposits by opening the valve.

If any carbon accumulates, wipe the carbon off the throttle bore and throttle valve, using a cotton pad.

CAUTION

Do not rub these surfaces hard and do not use a carburetor cleaning solution.