I am new to forum. Just purchased older 1981, I think. Serial # is B100S 1302665. Dealer says model is a BF100B SA made in 1981. Motor has not been run in at least 10 years. Motor looks very good for age. Got it home and put motor in large bucket of water and it idled good, pees good, forward and reverse work fine. Gear oil when drained looked good - no water. Drained oil from motor and it was extremely milky, clearly water in oil. Hoping it was just condensation over the years of non-use, I refilled with oil ran motor 30 minutes and drained motor oil and again extremely milky. Refilled it again this time only running motor for 5 minutes and got the same results – extremely milky. Did compression test and both cylinders came back at 130 psi. Where should I start? Please help - Ordered Manual published by Honda from Amazon today.