2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 118Get this manual
MAINTENANCE Remove the oil drain pipe cap and insert the filler capdipstick into the oil drain pipe until it seats, then remove it and check the oil level If oil appears on the dipstick, install the filler cap dipstick and drain pipe cap, and proceed to the Oil Level Check Procedure If there is no oil on the dipstick, do not start the engineReinstall the drain pipe cap and tighten itAdd the recommended engine oil into the oil tank through the filler hole until oil is on the dipstickDo not over fillInstall the filler capdipstick and proceed to the Oil Level Check ProcedureMake sure the filler capdipstick and drain pipe cap are tightened securely
OIL FILLER CAPDIPSTICK DRAIN PIPE
DRAIN PIPE CAP