JUST PURCHASED A 2000 753 BOBCAT FOR JUST UNDER $8000.00 WITH 2200 HOURS ON THE METER.(I THINK I DID ALRIGHT) SEEMS LIKE EVERYTHING WORKS O.K. I HAVE NOT GONE THROUGH THE MACHINE OTHER THAN PURCHASING A NEW MUFFLER. I AM LOOKING FOR A SERVICE AND REPAIR MANUAL AND HAVE COME ACROSS SOME WITH DIFFERENT LETTER DESIGNATIONS AND I AM CURIOUS AS TO WHICH ONE I HAVE . SOME HAVE 753 SOME HAVE 753H SOME HAVE 753F SOME HAVE 753G . MY MACHINE HAS A TRACTION CONTROL SWITCH IN UPPER LEFT CORNER AND EXTERNAL HYDRAULIC SWITCHES IN UPPER RIGHT CORNER. THUMB CONTROL ON RIGHT JOYSTICK . DOES THIS INDICATE WHAT MACHINE I HAVE OR IS IT IN THE SERIAL NUMBER?