Terramite Backhoe

[buckhornbob]

I have a '95 T5C gas engine. Motor runs great. The problem is when traveling the machine after it gets hot it surges,jumps. It's not bad just aggrevating. Does anybody have any idea what this is? I'm not sure if it's the hydro pump or the drive pump?
thanks
robert

[LesH]

I had a '93 gas t5c that got quite jumpy just before the drive pedal spring broke. When it did, it was like hanging on to a buckng bronco. Is this what yours does? Mine broke after excessive f- r getting unstuck from mud