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No....that was not the way it was back in 1976 but after 35 years of wear, tear and bad maintenance, that's how it is now. You have to undo all of that wear and tear so that you get it back to where it was when it was new.

Start by understanding how your tractor was built. Get the serial number off of the dash plaque and then go to our Tech Library/Parts Manuals/Kohler powered tractors and use that serial number to find the correct parts manual. You will look for the page that shows the travel lever. There is a nylon bushing at the top that wears out. The hole where the bottom of the travel lever sits in can also have wear but more importantly, the hole for the metal linkage rod and the metal linkage rod that fits into that hole can have free play. Lastly, there is the universal joint on the end of the linkage rod that connects to the spool in the travel valve that often is badly worn. All of this free play adds up and then you don't have perfect control over the spools movement in and out of the travel valve. Oil pressure is free to move that spool and create the jerky action you are complaining about.


I also suggest that you spend some time in the FAQ's section and read about how to change your hydraulic oil and trans-axle oil as well as the documents that speak about what oils to use and why. The hydraulic oil is ultra important to how these tractors perform.
 
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