Grizzly Engine & Transmission Question on a 2006 Yamaha 350 Bruin May 17, 2015 My son was out riding thee Bruin today when it suddenly failed to change gears. Its a 2006 Yamaha bruin 350 automatic.When you take off it doesnt change gears just revs up.Thanks for any help Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related