How to Remount the Gearcase on a Yamaha 60 Outboard
Whether you replaced the upper seals or worked on the water pump on your Yamaha 60HP outboard, you’re going to have to remount the lower unit (gearcase).
Watch the video above and follow the steps below to remount the lower unit on a Yamaha 60 outboard.
Tools and Supplies Needed – Yamaha 60 Lower Unit Remount
- 12mm, 14mm sockets
- 14mm box end wrench
- 3/8th ratchet
- Torque wrench
- Torque wrench adapter
- Marine grease
Yamaha T60 Outboard Gearcase Remount
Step 1. Make sure the motor is in neutral by giving the propeller (or prop shaft) a little spin in both directions. If it turns both ways, you know the lower unit is out of gear. However, if it’s not in neutral, turn the shift shaft (#64 in this lower casing drive diagram) to get it into neutral.
Step 2. Grease the drive shaft splines, the shift shaft, and the opening for the water tube behind the water pump.
Step 3. Slide the lower unit into place. Have one of the mounting bolts in hand so that when you get the lower unit positioned, you can thread it in to hold the lower unit in place. Use one hand to hold the lower unit and the other to reconnect the speedometer tube.
Step 4. Slide the lower unit the rest of the way into place and get one of the 14mm mounting bolts inserted. Tighten the bolt down, but don’t torque it until the rest of the four mounting bolts are reinstalled.
Step 5. Install the rest of the four exterior mounting bolts (two on each side).
Step 6. Torque all four of the mounting bolts to 29 foot-pounds.
PRO TIP: It’s a tight fit, so use a torque wrench adapter for this step. Use the adapter to get an accurate reading, so that your box wrench is at a 90-degree angle to the torque wrench. Otherwise, you’ll need to account for the angle in your torque settings.
Step 7. Reinstall the 12mm mounting bolt for the trim tab (the one hidden in the opening above the trim tab), then tighten it to 18 foot-pounds.
Step 8. Mount the trim tab, making sure it’s aligned correctly. Its mounting bolt is accessed from above. Torque the bolt to 18 foot-pounds and you’re done.
NOTE: We made some marks on the trim tab and on the bottom of the lower unit during disassembly to realign the trim tab to the same angle it came out from.