Engine and outdrive identification

[Magnus Wallner]

Hi.

I've just bought my first american daycruiser, a 1976 Searay 220 cuddy cabin. Supposedly the engine and outdrive (Merc 5,7 and Alpha One gen II) is 1992 and I was hoping to get this confirmed by you.

How do I determine the gearing of the outdrive?

I will run the boat pretty much as is this season but I'd like to know if there are any special considerations to take, or any must-doo's, before enjoying her. I'll change motor and outdrive oil, spark plugs etc but what more?

Is there a good way of determining the status of pump rotors without disassembly? The engine has two pumps, one fresh and one sea, and the outdrive has one - correct (that's how it looks at least)?

Sorry for the newb questions, I've only had direct shaft drive before

 

[steelespike]

Re: Engine and outdrive identification

Not sure about the details of an I/O but with 3 pumps it would seem you need to know when they should be serviced.
The one in the out drive if you don't know when done last it probably should be done.
Do some test runs and get the info in "read this first" at the top of the prop forum.
With that info we can help determine if your setup is working and what might help.
If you need info specific to the I/O maintenance you might post in the I/O forum.

 

[Magnus Wallner]

Re: Engine and outdrive identification

Thanks you. I'll get back to you IF it turns out the boat's not working properly.

 

[Fun Times]

Re: Engine and outdrive identification

You're stern drive is a 1991 MERCRUISER R.H. ROTATION ALPHA 1.50:1, ALPHA ONE (GEN II)
Parts catalog part number 90-81818391,
Serial No: 0D528065 Model No: 5010150DS.

Your engine serial number 0D522668 is a 5.7L ALPHA I
MERCRUISER W/ PS - (5.7L (1991 ) Model No: 457B100DS.

 

[Magnus Wallner]

Re: Engine and outdrive identification

Thanks