I HAVE A 1985 ALLIS 920 HYDRO WITH A AIR COOLED TWIN CYL. 18.5 HP LOMBARDINI DIESEL ENGINE.VERY NICE LITTLE TRACTOR.LOTS OF TORQUE. IT CURRENTLY RUNS A1 BUT FOR POSSIBLE FUTURE REFERENCE DOES ANYONE KNOW A GOOD COMPANY THAT HAS PARTS FOR LITTLE ITALIAN MOTOR.ALSO WOULD LIKE INPUT FROM ANYBODY THAT HAS HAD ANY EXPERIENCE WITH THE 900 SERIES MOWERS AS I AM A PROUD NEW OWNER OF THIS TRACTOR. THANKS.