sharpeye Mike wrote:
Would this be the same motor as the 40 HP Mariner, 2 cylinder of the 80s?
Totally different motor. The one you mention is a twin carb 36 to 37 cubic inch.
https://www.kijiji.ca/v-boat-parts-trai ... nFlag=trueThis one is a single carb 42 cubic inch. It looks like PARSUN has copied a lot of this motor. There are lots of parts on ebay that mention both yamaha and parsun in the same listing. Parts for this motor come from different locations in the world. It's hard to tell where the part was originally made and the parts are cheaper than parts for other motors.
It looks like yamaha originally designed this motor to be a twin carb. It has two separate large reed cages and a double carb intake manifold with a single carb mounted on the top with the bottom one covered. The Mercury Sea Pro two cylinder 40 hp is 40 cubic inch with a single carb intake. The two motors likely perform the same....NOW! mount a second carb on the yamaha and it would be a different story.
http://aquamarket-spb.ru/catalog_yamaha ... T300F1.PDFThis parts book was also why I thought the SHORT SHAFT model was new. There are no short shaft parts listed in this parts book.
Anytime we look at 2 cylinder short shaft motors, you really cannot beat the 40 to 60 hp OMC for value and performance!
https://www.kijiji.ca/v-boat-parts-trai ... nFlag=true