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The spring for the accelerator pedal (on right side) must have broke as the pedal collapsed forward and the mower doesn't move forward anymore. I bought #38 spring (732-04612) to try to fix it but I'm unsure where it attaches or if there may be some other parts missing. I looked at the schematic, but it doesn't show where to attach both spring ends as everything is so spaced apart. I notice on my mower, the parking break pedal on the left has a spring hooked underneath to it's assembly on the horizonal shaft, and the other end of that spring is hooked to a right side chassis hole. Does the accelerator pedal with a "shiney gear type assembly" that has a hole at the back corner, get one end of this #38 spring attached, and where then would the other end of the spring get attached that would give my pedal tension again and make the mower move? Does that other end of #38 spring get attached somehow to a pully mechanism or to the chassis also? If someone owns a 2010, 2011, 2012 Bronco could you please post, explicit detail directions and / or send a few pictures of the accelerator linkage, spring and where it attaches on both ends.
Thank you very much

The spring I see missing is not the #38 but is the #20. This spring that pulls the motion pedal back to its normal rest position. Also that engine to CVT pulley belt (#61) is quite worn.


Connection points.

StarTech said:

The spring I see missing is not the #38 but is the #20. This spring that pulls the motion pedal back to its normal rest position. Also that engine to CVT pulley belt (#61) is quite worn.
View attachment 69816

Connection points.
View attachment 69817

Click to expand...

StarTech said:

The spring I see missing is not the #38 but is the #20. This spring that pulls the motion pedal back to its normal rest position. Also that engine to CVT pulley belt (#61) is quite worn.
View attachment 69816

Connection points.
View attachment 69817

Click to expand...

Hi Star Tech, Thanks for answering my post. I'm including the diagram for my Troy Bilt Bronco 2010. My diagram doesn't have a #20 spring as that number is a nut but in my Diagram there are (2) #38 springs. One goes from the "Park break assembly" to the right side "chassis" which is how mine is hooked up so I didn't touch it. The other #38 i am assuming goes from the (near by) "shiney accelerator assembly" on the horizontal drive shaft (I show in my other pic), to perhaps a pulley hole somewhere so as I step on the foot pedal the mower moves and slows and increases speed. My brake pedal mechanism works fine but my accelerator pedal is unhooked and has fallen forward so it needs to be hooked to something underneath. My diagram shows (2) #38 springs attach to the horizontal drive shaft and under mine I see the brake hooked with a #38 so I need to hook the accelerator pedal up to something like perhaps a pulley mechanism? -Thanks for any help you can give

Sorry about that I pulled the wrong year diagram. I actually pull the 2012 year. So yours has two of the same spring. Drive pedal spring should still connect between screws 50 and 15.

MTD changed the spring on the 2011 and 2012 models from what you have currently. Sorry I didn't know they changed mid stream on me.

StarTech said:

Sorry about that I pulled the wrong year diagram. I actually pull the 2012 year. So yours has two of the same spring. Drive pedal spring should still connect between screws 50 and 15.

MTD changed the spring on the 2011 and 2012 models from what you have currently. Sorry I didn't know they changed mid stream on me.

Click to expand...

Thank you very much Star Tech for getting back to me. So I'm guessing I hook one side of #38 spring in the hole in that shiney brassy accelerator assembly with teeth on it and a hole at the end? Is that correct?
And I see screws 50 and 15 on the diagram, but not sure if that bracket is a stationary brackett mounted to the side chassis, OR is that bracket the one that holds the small "Idler pulley" in front of the two rear pulleys under my seat and battery that make a triangle? (There is a hole in that "Idler Pulley Brackett" and I have included a pic of that thru my battery hole of the 3 rear pulleys and how I belted the pulleys.) I am thinking if I hook to that moving bracket with the spring from Accelerator assembly, as I step on the right gas pedal, it might move the idler pulley and bracket to make the mower move and increase speed. Is it correct to assume this and that is how the mower works?

Also I had found the left rear pulley sitting on it's side when I removed the battery to get to see things better, and it was not really belted, so I took the long belt that comes from the front of the mower and snaked it around the lower part of that rear pulley, and plugged the pulley into it's hole. I then removed a shorter thick spring from the side chassis so the "#64 Idler pulley" could move, and I could then belt the 3 rear pulleys like a triangle above the long snake. Hopefully that's all correct?