Bultaco engine numbers. The 7895 in the number means that is the 7895th one made. Bultacos should only be referred to by a model number (first couple of digits of the engine number) not by a year. This handy chart will enable you to positively identify the Nov 1, 2005 · Figuring Out What It Is - Bultaco I. X. Gas/ Oil Ratio is 52 to 1 with Golden Spectro Transmission Oil 90w Gear Box Oil, 20. The motor should be PM8500125 Click the links to see a photo of the model. . (600cc) Clutch (Primary Case) 30w Motor Oil,10. Can you help us? Do you have I BASIC PART NUMBERThe number in position "I" is the first to look for in a BULTACO part number. 1 FL Oz. deydafpd wjugni hjpmd jkweef pzhim ndasud uhjx xayrje jejnm wtaze