It sounds like that is a faulty diverter valve. Does your steering still function? If your steering is still operable it is definitely your restrictor valve. There is supposed to be an O-ring at the bottom of the valve. Feel free to contact us at Keno Tractors if you need additional assistance.
Best regards, Tyler Nystrom
Keno Tractors, 866-363-8193
Tyler Nystrom
Keno Tractors
parts@kenotractors.com
866-363-8193
Phone hours: M-F 8am to 5:30pm PST Sat 9am to 1pm PST