Hydrobikes by Fun Watercraft introduces the HydroBike

Step 1:            Locate the two drain plugs (Lube Drain and Lube Vent) at the top of the propeller drive train assembly, with the propeller drive train assembly in the DOWN position.

Step 2:            Use a container to catch the old lubricant.

Step 3:            Place the container under the lower hole to catch the lubricant.

Step 4:            Remove the drain plugs and the rudder o-rings, and rotate the propeller drive train as shown.

Step 5:            When the lubricant is fully drained, rotate the propeller drive train to its DOWN position.

Step 6:            Add new lubricant.

Step 7:            Wet the o-ring seals with lubricant and install.  Install and tighten stainless steel drain plug screws.

                        Be careful not to over-tighten the drain plugs.  When the plug feels snug, turn one-quarter turn more.