Cjwv1975 73 #1 Posted May 3, 2024 Just got a C160 back together. Fiddled with the carb some but dont think I have it tuned yet. Anyway while testing a mower deck on it the muffler and pipe turned white. Tractor ran fine. Is this a sign of too rich or too lean or just paint burning off. Its a Kohler k34. Thanks Share this post Link to post Share on other sites
Fordiesel69 271 #2 Posted May 3, 2024 Paint burning off. Loosen main just until it runs rough, then tighten in very slow and very carful 1/4 turn at a time till it smooths out. That will be good enough. I like mine a touch on the rich side so the head and ex valve is cooler (at the expense of more carbon). 2 Share this post Link to post Share on other sites
ebinmaine 72,426 #3 Posted May 3, 2024 3 hours ago, Fordiesel69 said: touch on the rich side Seconded 1 Share this post Link to post Share on other sites
ri702bill 9,348 #4 Posted May 4, 2024 Agreed - too lean can burn the valve. Share this post Link to post Share on other sites
kpinnc 14,585 #5 Posted May 4, 2024 19 hours ago, Cjwv1975 said: Is this a sign of too rich or too lean or just paint burning off. Looks like you used galvanized pipe. You can wire brush it now and recoat using black stove paint (brush works fine) and it won't rust. Share this post Link to post Share on other sites
