Your steering linkages need to be adjusted. If you identify your make and model Im sure you will get some direction. Mike
You'll find a thread with a lot of details on this subject , I'd look at the pintle levers which are tri angular steering bars under the black plate on top the sunstrand transmission pump , the bolts holding the pintles to the shaft seem to come loose a lot , you can tell easily by puttting a large screw drive , perferrablly a bent end one , under the pintle and prying up to see if it wiggles on the shaft , if the pintles are tight proceed with a steering adjustment using the two square blocks bolted under the steering plate which have 4 3/8 ( 9/16 headed) bolts holding them on , a lot of times just tightening up the pintles puts in right back in neutral , if you try to adjust it first then tighten the pintle up it puts it way out