1974 (MPC System)
- Connect Bosch Tester (EFAW 238) and set switch "A" to "MEASURING" position. Set switch "B" to "THROTTLE VALVE SWITCH III" position. Mark intake duct at upper screw. Loosen throttle valve switch screws.
- Turn throttle valve switch clockwise as far as possible, then slowly turn switch counterclockwise until tester needle goes from infinity to zero ohms. Now turn switch an additional one degree (1/2 graduation mark on scale at upper attaching screw) and tighten throttle valve switch screws.
- Ensure that tester needle goes to infinity when throttle valve opens one degree. Place a 0.020" (0.51 mm) feeler gauge between stop screw and stop on throttle valve spindle. Change feeler gauge to 0.012" (0.30 mm). Tester needle should NOT read infinity.
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