I have a 2007 Yamaha Raptor and Bruin that have been sitting for about six months without being ridden (or started). Both batteries are completely dead so I'm going to get new batteries for the bikes. What about the gas that has been sitting in the tanks and system for so long? Is there a product I can buy to run through with the gas that will help clear up any "gummed" up parts?

Also, what is the best product to use for cleaning the air filters? Thanks for any help.

 

drain the tank and the carb bowl. refill it with fresh fuel. install the new battery and grab a new spark plug as well. check in to a can of Seafoam to run through the system as well. add all those together and you should fire right up on the first attempt.