The Series 60 engine can be configured with or without a mechanical tachometer drive. A camshaft drive gear access cover mounted to the gear case cover and a slotted head camshaft bolt must be used with the mechanical tachometer drive option.
| 1. Attaching Bolts | 4. Camshaft Drive Gear Access Cover |
| 2. Tachometer Drive Adaptor | 5. Tachometer Drive Shaft |
| 3. Tachometer Drive Unit | |
