Ignition Timing
| Spark Control Computer | 4289813 | 4289913 | 4379228 |
| Basic Timing | 7 Degrees Before Top Dead Center (deg BTDC) | 7 Degrees Before Top Dead Center (deg BTDC) | 16 Degrees Before Top Dead Center (deg BTDC) |
| Spark Control Computer | 4289813 | 4289913 | 4379228 |
| Basic Timing | 7 Degrees Before Top Dead Center (deg BTDC) | 7 Degrees Before Top Dead Center (deg BTDC) | 16 Degrees Before Top Dead Center (deg BTDC) |