L3400 HST pedal jerkiness/stiffness

[JCole]

Hey fellas,

I'm back sooner than I expected Well, since I had my neighbors tractor in the shop the other day, he asked me to look at another issue- pedal jerkiness/stiffness... It's not a real smooth transition when taking off and it's not like you have to stand on the pedal to make it go, just a little extra effort and then it'll grab and go. I might be imagining things, but it also seems reverse is faster than forward speed? I was in medium and maybe it was just me??? One other observation w/ the pedal, it looks like there is more travel in the reverse position than forward. I don't know if it's supposed to be that way, but it is something I noticed.

Thanks,

Jeff

 

[meanjean]

I've got a mower with hst.
Every now and then it creeps forward on its own or jerky movement as discussed above.

Added 2 squeezes of greaseat the zerk and problem solved.
Give it a rip.

 

[Tom B]

Hey Jeff,
Of course all models are not represented or have exactly the same parts. My L3400 HST (think it a 2009 model) pedal was sticky and jerky in forward making for some interesting launches. It was smooth in in reverse. I tracked it down to a pivot point on the lever that goes up to the safety switch attached to the steering tower. At the pivot point is a roller located just ahead of the pedal under the linkage cover plate. The roller on mine can be seen through the slot at the rear of the cover.
I gave this a quick shot of WD40 and the results were immediate, the pedal now travels freely and smoothly making for much better fine movements.

Hope this helps
Tom

 

[Diydave]

Was watching an auctioneer try to start and sell a MF 1010 hydro, yesterday, exhibited the same symptoms. Are you sure the parking brake is off??