Can anyone tell me what year and hp this motor is?

[Fun Times]

B115204 Is the number on the Welch plug

That is your serial number and the engine is coming up as an MERCURY 20 HP M (Manual start) model number 1020207 which makes the year a 1987.

Search the model number online for a parts catalog.

 

[flyingscott]

Very easy to put electric start on that motor hard part is finding the tiller switch. You just need to find the parts or go to a mercury dealer and see if they still make a kit.

 

[Chinewalker]

Yep, easy to do, but not cheap. Might be better off finding a parts motor with the parts you need - starter, wiring, flywheel.

 

[flyingscott]

it is fairly cheap to put electric start on most of the parts you can get used and you don't need the whole flywheel. Mercury uses a ring gear not a separate flywheel assembly like OMC. The hard part is the tiller switch which you can find on ebay as NOS

 

[zackduncan40]

I think mine already has the button in the end of the tiller handle! Is it a little red push button? That is the only thing I could see it being because the kill switch is on the side of the motor

 

[zackduncan40]

And also I need a carburetor rebuild kit for it... And I can't find the one I need on iboats.. Can one of you post a link or a product number for me to search please? When I put in the model #1020207 nothing came up so I'm not really sure what to get.. Thanks guys!

 

[flyingscott]

Red button is a kill switch not a start switch. The correct serial # to look up parts for your motor is 0B115204. Merc goes by serial # for parts look up get the carb kit that has the fuel pump and primer assembly gaskets.

 

[zackduncan40]

@flyingscott: on iboats when I search the model number or the serial number nothing comes up... Do you know a part number I could search for the rebuild kit?

 

[flyingscott]

1395-9761 1 is the mercury part#
1395-823707 2 is another mercury part # probably don't need that one. double check these #s

 

[zackduncan40]

Can one of you give me the part number for the electric starter kit that gives me everything that I need to make my motor electric start or give me a list of parts I need? Thanks guys!