stacey tame 0 #1 Posted November 6, 2015 what should I run in my 520-h for spark plugs and what to gap??? Share this post Link to post Share on other sites
boovuc 1,090 #2 Posted November 7, 2015 I run Autolite 104's in both my 520H and 416-8 Onan Powered engines.The Champion plug as an OEM was an RC14YC. I found these fouled quite a bit so I moved to a Champion RS17YC but then it seemed to run too hot. The Autolites seem to be just right for both my Onan's. No issues what so ever and they last a long time!Gap is .025" 2 Share this post Link to post Share on other sites
stacey tame 0 #3 Posted November 7, 2015 ok cool thanks Share this post Link to post Share on other sites
JC 1965 1,532 #4 Posted November 7, 2015 I use Autolite plugs in all my tractors. Share this post Link to post Share on other sites
