Buzz 502 #1 Posted January 30, 2009 It's on a 520-H. What brand and number does it take? Someone asked on the manuals group and i can't find it :thumbs: Share this post Link to post Share on other sites
nylyon-(Admin) 7,120 #2 Posted January 30, 2009 I don't have the answer for you, but on my 416 I changed the plugs last year, the original plugs were RS17YX but the manual called for RS14YC. I tried the RS14YC and they sucked, put in the RS17YX and it ran perfectly again. Gap is .025 Share this post Link to post Share on other sites
dave s 0 #3 Posted February 2, 2009 Buzz! I pulled a plug from my 520HC, Champ. RS14YC @ .025". dave s Share this post Link to post Share on other sites
Buzz 502 #4 Posted February 2, 2009 Thanks Dave. Sorry I didn't thank you earlier Karl, too many long hours at work( 68 last week, 92 the week before ) Share this post Link to post Share on other sites
