Bobcat turns while driving

[dirtpig538]

I'm sure this has been discussed, but I can't seem to find a thread that will answer my question. My 630 will not drive in a straight line, wants to turn to the left. Is there an adjustment to correct this?

 

[OldMachinist]

If both drive motors are good it may only need the steering linkage adjusted. The 630 had 2 different linkage set ups depending on the serial number. If you put the bucket against a large tree will it spin the tires in dirt on both sides or is one side weak?