AquaCraft Rio 51 - Manual (Page 13)

BASIC MAINTENANCE
Remove standing water by pulling out the drain plug and draining away any water that might have entered the hull.
Remove the hatch cover. Open the radio box, remove and toss out the old batteries.
Remove the driveshaft by loosening the two 4mm screws
from the outer strut housing.
Slide the inner strut assembly with shaft out of the boat.
Wipe away any oil and grease.
Re-grease the shaft using GrimRacer Speed Grease.
Re-install the shaft and inner strut housing, making sure
the two 4mm screws are tight.
Wipe down the entire boat, inside and out, with spray-on cleaner and a paper towel. If water is in the boat for a week or
so, the water vapor will get into the engine, potentially causing the piston ring to rust.
Leave the cowl off the boat overnight to let any water evaporate from the hull.
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