I recently got used kabota B7001 don't know much about them ..I changed the fuel and air and in doing so the tractor wouldn't start then I found out that I had to bleed the line in order to start it but now that I got it going the tractor move very slowly when I put it on 3nd gear it moves like its on 1nd gear..does bleeding the lines affect the speed of the tractor..?? thanks in advance johnny