No forward/reverse on 6300 john deere - John Deere 6300,6300l,6400,6400l Tractor Radiator

SOURCE: forward/reverse lever not holding in position on

Some come with a tension bushing underneath on linkage. Check that first

SOURCE: john deere 300 garden tractor will not go forward or backwards

Make sure the neutral lever (rod) back by the right rear tire is pushed ALL the way in.

SOURCE: my john deere 316 stopped moving forward and

HAVE YOU CHECKED THE TRANSMISSION/HYDRAULIC
OIL? THEY ARE THE SAME. ON SOME TRACTORS THIS
CAN BE CHECKED AT THE REAR OF THE TRACTOR JUST
BELOW THE SEAT. IT COULD ALSO BE A BAD HYDRAULIC
PUMP.

SOURCE: My John Deere traveling sprinkler

Improperassembly. Change the direction of the nozzles on the spray bar so it turns in the opposite direction..

SOURCE: I have a John Deere

Your model has a hydraulic cylinder attached to the pedal linkage and its purpose is to slow the pedal movement when depressed. When this little shock/cylinder fails the pedals move to quickly giving you the sensation of rear wheels locking up. Its between the frame and trans on the right.