Lower End Issues

[JustinH]

'89 350 Magnum/Alpha 1 Gen2

Feels like a spun prop but it isnt, goes fine in reverse but only goes 3mph in foward then starts slipping. When in gear i can turn the prop clockwise and i can hear a slight clicking somewhere in the lower unit.

[boatfixer]

While in fwd rotate the prop counter clock wise. What happens? The prop shaft should not be able to turn. Rotating clockwise, the "ramped" side of the clutch dog will ratchet, which is normal

A couple of things come to mind if you are 100% sure that the prop hub is not slipping.

Shift cable adjustment

worn clutch dog

Engine coupler slipping.

To isolate the problem get a manual if you are familiar with adjusting the cables and try to adjust first.

Drain the gear lube and look for shavings or other contamination indicating a problem internally.

Pull the out drive and inspect the shaft splines that go into the engine coupler for signs of slpipping.