Re: 1978 50hp merc impeller replacement
Hmmm - if the L/U drops down a whole 1.5 inches, I can't imagine what else could be holding it. At that point the driveshaft should be loose from the crank and it should just fall off. If the shaft were rusted into the crank, it wouldn't drop that far. With that big a gap, you should be able to see inside - check the water tube and see if that is free, and check the shift rod. Are all the bolts/nuts that hold the L/U on fully removed?