With the Yamaha 4 stroke engines gaining popularity in other applications this page was created to publish a list of engines currently in stock. I do not sell any engines that I've never heard run. All motors I sell were removed personally from sleds myself that I have driven or ran on a stand in my shop. Many motors come from dealer trade ins or sleds I've purchased privately so I have a background history on the units. As with all inventory, motors are stored indoors after removed from a sled.
For those interested in installing a Yamaha Engine in experimental aircraft, there are several people machining adapters that make installing a gearbox a direct bolt on to a Yamaha 4 stroke snowmobile engine. I will be happy to put you in contact with these people to further assist you in your project.
If you don't see a motor listed that you like contact me. I always have lines on sleds for sale and buy most of my sleds based on sales demand.