I have a 1986 Yamaha YFM 225 Moto 4 with a Mikuni carb. I have been unable to determine which carb it is. There is nothing on the carb except "mikuni corp" "made in japan". It has a round slide, Intake OD is 40.9 mm, engine side ID is 28.8 mm. Mounting bolts are 53 mm on centers. Is there any other info. needed to help identify? I also would like to know what the float level setting should be. Thanks

 

Buler...Buler. Anybody?