I just posted a question about pedal centering springs breaking. The tractor is a 3510h branson

Here are the general steps for replacing the clutch pedal spring on a 2017 Troybilt Pony lawn tractor:

1. Park the tractor on a level surface, engage the parking brake and stop the engine.
2. Locate the clutch pedal spring. The spring is typically located on the left side of the tractor, connecting the clutch pedal to the clutch linkage.
3. Use pliers to remove the spring from the pedal and linkage.
4. Compare the new spring to the old one to ensure that they are the same size and shape.
5. Install the new spring by connecting one end to the clutch pedal and the other end to the linkage.
6. Test the clutch pedal to make sure it moves smoothly and returns to the proper position when released.
7. If the clutch pedal still not working properly or is hard to press, you may want to check the clutch linkage and make sure it's not binding or damaged.

It's important to follow the manufacturer's recommended intervals for replacing the clutch pedal spring, and to use the correct replacement part recommended by the manufacturer.
Keep in mind that these are general instructions, and the specific steps for replacing the clutch pedal spring may vary depending on the make and model of your tractor. It's always recommended to consult the owner's manual or contact the manufacturer for specific instructions or guidance.

blades must be disengaged and the clutch disengaged.
start ckt goes thru the ign sw and the switches on these devices to the starter.
Check the battery and connectors first. Then follow the wires.

Check if spring is tere

Check your brake return spring for being wear, and check all your pullies if you have one with a bearing out it will start wobbling causing vibration in the pedals.

there might be a spring off or pedal needs adjusting
does it have a neutral that works correctly?
if so adjustment is ok check springs

Sounds like you're getting replacement springs from the same batch of defective springs.
I am not familiar with your equipment, but if these are coil springs that are designed with the coils collapsed (touching each other) when relaxed, then I'm guessing the shock of snapping closed shatters them.
Classic case of hydrogen embrittlement.

it's not installed correctly is my first guess. then I would look for a broken/missing spring

normally they work by spring lock system, follow the bar under the hood or engine and check if any broken or missing spring or parts often bended by running over things

If you need further help, reach me via phone at https://www.6ya.com/expert/gerardo_79638d1eac6a0a1f

http://generaltransmissions.com/en/technology/ They are the MFG of the transmission. you can call them for parts. Best Joe

There are four possibilities. From worst to easiest to fix: (don't worry, a link provided below has diagrams of all the parts in exploded view with part names)

1. There are two springs holding the brake shoes firmly against pivot post and brake lever cam, the ends of these can wear through and break. These provide most of the spring tension felt in a cable operated expanding shoe brake. Requires wheel removal and simple removal of brake hub to access.

2. The cam that expands the shoes (when rear lever is actuated) runs through a waterproofing rubber grommet. This grommet can often tear and bind up, reducing the return spring's effectiveness.

3. There is a spring behind the brake's foot pedal frame mount and the plate that pulls the front of the cable end. This maybe either dislodged or the angled ends broken off.

There is a compression spring at rear wheel end of cable, between cable stop and lever arm. This can be removed, stretched and replaced or packed with spacers to provide additional spring.

Check site below: Wheels/tyres/drive - Rear wheel parts #6 (shoe springs) part #7 (brake cam)
Frame/Footrests - part #4 (pedal return spring) part #9 (compression spring)

If this helps let me know below, ...Cheers.

http://www.bikebandit.com/houseofmotorcycles/2004-yamaha-motorcycle-xv250s-virago-250/o/m8460