Ayuh,..... Generally speakin',.... That sorta repair requires strippin' it down to the bare case,....
Labor to put it back together bein' what it is,...
Replacement with an aftermarket lower unit is probably considerably cheaper,.....
Whether it's Oem, or aftermarket don't really...
Ayuh,...... Welcome Aboard,....... It'll work,.....
But, not very well,...... terribly inefficient,.....
'n, ya may not be able to find a prop with enough pitch to tame the rpms,.....
Ayuh,...... Welcome Aboard,......
I don't do the electronic motors, but I'm bettin' AlDodge might be able to help ya,.....
He's gonna want the serial number of the motor though,.....
Ayuh,..... Welcome Aboard,......
The mechanical pump has worked just fine for 40 years or so,.....
The electric pump will need fancy wirin' to work properly on a boat motor,.....
Ayuh,..... That hole is used only durin' the manufacturin' process, 'n is then sealed, water tight, with the welch plug,.....
If it leaks, I believe it fills the shift cavity with water,....
Ayuh,..... Diameter is determined by blade design,......
Pitch pushes yer boat,......
You shop for pitch,....
The design engineer builds in the diameter to work with the blade design,......
Ayuh,..... Welcome Aboard,....... The Alpha drive has a raw water pump in it to supply the water,....
The water pump on the front of the motor is just a circulator pump,.....
Ayuh,..... Welcome Aboard,....... Not much different,......
Year of production,....
2bbl. or 4bbl. carb,.....
3" or 4" heat exchanger,......
The basic motors are all the same, 'n generally leave alot to be desired,.....