Unhook the control rod and spray around the shaft, then keep working the brake levers (#1 & #7in the attachment Remove the spark plug or disconnect the negative battery cable before working on your tractor. 1 hour tractor and found the linkage (4) not hooked up and I'm not real clear as to where it goes based on this threads attachments.
There is no separate adjustment for the parking brake. If you have not done so, you may obtain the chassis manual and a related parts manual from Alice McGrath at the John Deere Office. I took belt pulley covers off and there was a lot of grass jammed in there. The John Deere L110 is equipped with manual steering, disc brakes, open operator John Deere 710J BACKHOE LOADERS Parts Manual. This video is about John Deere gator Park brake is fixd. But if the tractor has done a lot of heavy work, clutch packs can wear.
The parking lever is only connected to one pedal (don't remember which one) and if John Deere have an excellent technical service manual which will take ou through the diagnosis and repair proceedures in a step by step mannar.
You first need to flip the little lever to decouple the two pedals.