MJBruns Posted October 1, 2005 On a 2005 YZ450F carb there is a diaphram on the left hand side of the carb body with a 2 screw cover anybody know what that is ? Mike Share this post Link to post Share on other sites
XR250rdr Posted October 1, 2005 Thats the air cut valve. Its supposed to reduce popping on decel. The YZFs never used to have them. Share this post Link to post Share on other sites
Wayward Son Posted October 2, 2005 yep,same deal as what called coast enrichener in drz land. Share this post Link to post Share on other sites
