chris sutton 610 #1 Posted November 28, 2014 Can anyone tell me the size of tap I need to clean up the thread where the exhaust screws in the block. I have one for the 10/12 HP but this one seems smaller. Many thanks Share this post Link to post Share on other sites
buckrancher 2,694 #2 Posted November 28, 2014 1" npt Share this post Link to post Share on other sites
