Mercury sterndrive serial# OW505786...can anyone tell me what type and gear ratio?

[dgiles]

It is off my 04 Rinker Captiva 192 with a 5.0L. I am having difficulty with RPM and speed. Tach is set correctly on V8 but it is indicating 5000 RPM turning a 14 x 23P prop and 42 MPH. Something isn't right, so plan to check with a tachometer but really would like the sterndrive info as well.

Thanks in advance.

 

[Don S]

Re: Mercury sterndrive serial# OW505786...can anyone tell me what type and gear ratio

Look on the port side of the upper gear box, the gear ratio should be stamped in the side along with the serial number of the drive.
For that serial number, it should be a 1.62:1. Unless someone changed it.