Mercury 150hp. The person I bought it from told me it was a 1991, but I think it's a 1986. Person I bought t from told me the engine was rebuilt two years ago. Hasn't been on the water in a year, for that reason it's probably a good idea to replace the water pump and change the lower unit oil after purchase.  

Recently purchased this and I can't put it on my boat because my boat has a max hp rating of 115. Will consider trade for a relatively close year 80- 115 hp outboard motor w controls. 20 inch drive shaft. Turns over easy, I haven't tested it on water bc I can't legally put it on my boat as intended. Compression test was good and consistent last week. 

 Being sold as is.