1974? Mercury 50 H.P. Motor??

[Chia19]

Hey guys just picked up a boat that has the motor pictured on it. Boat has been sitting for 20 years really curious as to any and all information about this motor or where I could get parts ? I know I need plug wires for starters. Have not attempted to fire due to wanting to get a good check list of things before potentially damaging the motor! Had a buddy mention a new water impeller?? Thanks in advance guys any and all info would be great!

Nick (not a marine mechanic)

 

[flyingscott]

To look up parts for any mercury you will need the serial # that will tell you exactly what you have.

 

[merc850]

After viewing the images I would say that the motor has a lot of issues, leaking block? (above plug wires), heavily corroded LU that is going to be a headache to work on and the wiring could be disintegrating (not seen in pictures); even the shift or throttle cable is rotten. To be a reliable and safe motor you would have to replace a lot of parts. The boat is probably in a similar state of decline. Your motor has been badly neglected and it will take some money to get it restored. Yes I would separate the LU from the driveshaft housing first and see if the waterpump can be repaired - there is a nut under the trim tab that must be removed. Drain the gear lube.
The plug wires are screwed into the cap so don't pull them out.



I have 7 Mercs and I have done work on them so I know what's involved. Here's' a source for wires etc. http://store.oldmercs.com/category_s/887.htm

 

[Chia19]

Thanks for the starting information guys! I'm going to try to find the serial number somewhere. Yes the boat has been sitting does anyone know what these are worth running? Any other information please let me know guys! Really appreciate the starting help so far.

 

[merc850]

The ser. Nr. should be on a plate between the thumbscrews and on the block near starter.

 

[Chia19]

4078569 Looked like hand stamper was used right side of motor on block ! On the merc site you posted confirms 1974 !