1. Screw & washer, injector retainer 2. Retainer
3. Injector
4. O-Ring, Injector Upper
5. O-ring, Injector Lower
6. Screw & Washer, Pressure Regulator
7. Cover, Pressure Regulator
8. Seat, Spring
9. Spring, Pressure Regulator
10. Diaphragm, Pressure Regulator
11. O-Ring, Fuel Inlet Tube
12. Nut, Fuel Inlet
13. Seal, Fuel Inlet Nut
14. O-ring, Fuel Outlet Tube
15. Nut, Fuel Outlet
16. Seal, Fuel Outlet Nut
17. Screw & Washer, Idle Air Control Valve
18. Valve, Idle Air Control
19. O-ring, Idle Air Control Valve
20. Screw & Washer, Throttle Position Sensor
21. Sensor, Throttle Position
22. Screw & Washer, Fuel Metering Body
23. Body, Vacuum Tube
24. Gasket, Vacuum Tube Body
25. Screw and Washer, Fuel Metering Body
26. Fuel Metering Body
27. Gasket, Throttle Body
28. Throttle Body
29. Gasket, Flange
30. Plug, Idle Stop Screw
31. Screw, Idle Stop
32. Spring Idle Stop Screw
Disassembly
Us the exploded view as a guide. The numerical sequence may generally be followed to disassemble unit far enough to permit cleaning and inspection. Note special instructions.
Special Instructions
Injector (3) remove carefully by pulling straight up. Use caution not to bend or break terminals. Remove and discard screen filter.
Throttle position sensor (21)-scribe a mark on mounting the flanges for reassembly reference.
Pressure regulator (7)-to avoid distortion of cover, maintain pressure on cover during screw removal.
Idle stop screw (31)-turn in to lightly bottom, record number of turns for reassembly reference.
Do not disassemble throttle shaft assembly unless replacement is necessary.
Cleaning
Cleaning must be done with unit disassembled. Soak parts to soften and remove foreign material in cold immersion cleaner (max, 15 mins). Be sure all passages are cleaned of carbon and varnish deposits. Use compressed air to blow out all passages. Do not soak or use cleaner on electrical or rubber parts such as injector (3) diaphragm(10), idle air control valve (18), or throttle position sensor (21).
Reassembly
Reassemble in reverse order of disassembly. Note special reassembly instructions.
Special Reassembly Instructions
O-rings apply silicone oil for ease of installation.
Injector - install new screen filter from bottom. pushing up to lock in place. Align terminals, push straight down to fully seat.
Idle air control valve-push end of cone in until fully seated position before installation.
Pressure regulator-be sure diaphragm is completely seated in groove before tightening cover in place.
Throttle position sensor-align scribed marks made on disassembly when mounting.
Idle stop screw-turn in to lightly seat, back out number of turn recorded on disassembly.
