Mariner power head replacement??

[Ghost Rider 2]

I have a mid 80's 40 HP Mariner with broken piston. Will a 30 HP power head bolt on as a replacement? They look the same but I don't know if the will interchange and did not know where to ask other than on the forum. Thanks

 

[Laddies]

Re: Mariner power head replacement??

Sorry that won't interchange