Well I either have one spare brand new factory complete powerhead including crank, pistons and head for a Mariner or Yamaha at a bargain, or I am short all the rest of the motor less powerhead. Yes I ended up with this new block and was ready to bolt it to my Mercury 25, but discovered on this forum that I got the wrong one. This forum clarified that my new powerhead is a quality 689 block which is common on a lot of 30hp Mariners built by Yamaha and is also common in many Yamahas as well. I have discovered that Mercury late models below 30hp use a throw a way block which is not practical to repair. I]Mariners or Yamahas with 689 in the model or serial number is a match[/i] Too bad the Merc 25 is not this quality and can't be rebuilt cause they dont use a steel liner anymore. My 689 powerhead is old stock though brand new so I cannot take it back even though it won't fit the Merc. Bargain anyone either way. Shipping is about 35lbs UPS from AR or do you have a blown powerhead and would sell me your motor. What to do? Rons boat
