 Step 1. Prepare for installation. |
 Step 2. Disassemble the focus drive as shown. |
 Step 3. Remove the fine focus knob by unscrewing the two screws. Keep them for the next step. |
 Step 4. Attach the provided stub with the two screws. |
 Step 5. Remove the coarse focus ring by unscrewing the three screws. Keep them for the next step. |
 Step 6. Attach the provided ring with the three screws. |
 Step 7. Attach the flexible coupling to the stub. |
 Step 8. Pull the sleeve on until the set screws align with the groove in the ring and tighten them. |
 Step 9. Tighten the set screw holding the motor in place. |
 Step 10. Tighten the set screw holding the back cover. This completes the installation. |