stoneman 10 #1 Posted May 7, 2010 The muffler on my C-81 is rattling at mowing rpm. it's not the inside. if i throttle up to mowing rpm, it starts rattling. i put the heel of my boot to it, and i stops. i made sure the mounts were tight and they are, including the lower frame strap. i'll spray some penetrating oil on that lower mount and see if that help. any tips? i'm open to replacing the stock muffler although it seems to be fine. i wouldn't mind putting a short stack or something like that on for a good look. thanks Share this post Link to post Share on other sites
Kelly 1,028 #2 Posted May 7, 2010 Make sure the clamp/U Bolt is tight, I was just messing with my C-81 last night and noticed that the lower strap mount was broke right at the bolt, bolt is still tight, and the muffler feels solid but when running it kinda squeak's. Share this post Link to post Share on other sites
stoneman 10 #3 Posted May 7, 2010 ah hah. after further inspection, the lower strap bracket has broken. completely separated from the muffler, about 1.5 square. should be able to weld it any recommendations on applying that weld? thanks Share this post Link to post Share on other sites
rickv1957 70 #4 Posted May 7, 2010 A mig will do a fine job on the weld!,Rick Share this post Link to post Share on other sites
stoneman 10 #5 Posted May 8, 2010 took it to wild bill the groovy welder . . . he used a mig w/stainless. put er on and no more rattle. i don't like rattles. :D Share this post Link to post Share on other sites
