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Need help. I have this ht20 finally running well. The timing was off by 2 teeth along with many other things. It runs smooth now. The problem now is when I engage the travel pedal it lerches forward and when it goes into reverse it does the same. If you go real slow you can go forward with out lerching but have to come to complete stop and go real slow into reverse so it wont jerk. is there an adjustment that I'm not seeing in the manual? Its different from my 1886 that is very smooth. Any advice or help would be appreciated.

Thanks Jim
 

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Sounds to me(and I am no expert)like air in the system...or the "free"lever /screw(what ever you have to allow it to roll with no Hyro )isn't locked down????
 

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Ohh and dont bank on my advice,you could have a fire or explosion if you do(I think I think more than I know I think..but like to help..and think.)
 

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I'm not familiar with the specifics of the Bolens hydro control linkage but on a JD tractor that sort of symptom is usually due to slack in the linkage or a broken damper shock. The shock slows down the response so you don't get sudden lurches like that. Check the linkage from the pedal to the transmission and look for worn pins or pivots, spots that need lubrication etc.
 

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I'm not familiar with the specifics of the Bolens hydro control linkage but on a JD tractor that sort of symptom is usually due to slack in the linkage or a broken damper shock. The shock slows down the response so you don't get sudden lurches like that. Check the linkage from the pedal to the transmission and look for worn pins or pivots, spots that need lubrication etc.
Could be that also :thumbs:
 

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I'd say You should check your bull gear.
Jack up one rear wheel.
And spin tire back and forth.
You should not feel a lot of free travel.
If the wheel spins free for five inches or so, before engaging, You may have a bad bull gear.

Joe
 
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