I have a Troy Bilt tractor ( Big Red) purchased 3 years ago from Lowe's. I have a never ending fix this n that list. Latest $300 spent,ran two hours, then will not go. I think there is a spring which was attached to the gas pedal to SOMETHING, which broke. The pedal goes down now with no resistance. Anyone who can tell me the part I am missing and the end-place to stake it to, I'd appreciate it. And if you want to stay up all night reading my opinion of Troy Bilt, I'd be glad to post it! Thanks mary