1976-79 Models
- Connect tachometer to engine. Warm engine until normal operating temperature is reached. Stop engine. Pull choke knob out fully and restart engine.
- Engine speed should reach specified RPM within 10 seconds of starting. If fast idle speed is not within specifications, remove carburetor from engine. With carburetor removed, be sure choke valve is held fully closed.
- Measure clearance between PRIMARY throttle valve and wall of throttle bore. If clearance is incorrect, bend fast idle rod until correct clearance is reached.
1976 FAST IDLE SPECIFICATIONS
| Application | RPM | Clearance In. (mm) |
|---|---|---|
| RX3 | ..... | .071-.087 (1.8-2.2) |
| Cosmo & RX4 | 3000-3500 | .067-.079 (1.7-2.0) |
1977-79 FAST IDLE SPECIFICATIONS
| Application | RPM | Clearance In. (mm) | |
|---|---|---|---|
| Cosmo & RX4 | |||
| Federal | 3000-3500 | .039-.047 (1.0-1.2) | |
| Calif. | 3000-3500 | .051-.059 (1.3-1.5) | |
| RX7 | |||
| Federal | 3200-4000 | .035-.045 (0.9-1.1) | |
| Calif. | 3200-4000 | .051-.059 (1.3-1.5) | |