How to Change Yamaha 60HP Gearcase Lube
Changing out the lower unit oil (or gearcase lube) on a Yamaha outboard is a very simple yet essential maintenance task that pretty much anybody can do.
Watch the video above and follow the steps below to learn how to do a lower unit oil change on a Yamaha 60 HP outboard in a handful of minutes. Use our Yamaha 60 lower casing drive parts diagram for additional reference.
NOTE: We already had the lower unit removed when we did our gearcase lube change in the video above, but you don’t need to remove it to get this job done.
Changing Yamaha 60HP Lower Unit Oil
Step 1. Place a drain pan under the lower unit, then remove the oil vent screw at the top and the lower unit oil drain/fill screw at the bottom, and let the gearcase oil drain out. Make sure not to lose the washers for either screw.
Step 3. Pump gearcase lube into the fill hole until it starts to overflow from the vent hole at the top.
Step 4. Reinstall the oil fill screw and its washer.
Step 5. Detach the fill pump hose from the oil/drain fill hole, then reinstall the screw and its washer and you’re done.
Before refilling the gearcase oil, having the oil drained out is the perfect time to do a pressure test on the lower unit to detect leaks. Watch the video below to see how to do a lower unit pressure test on a Yamaha 60 outboard.