Join Date: Nov 2015
Location: So Lame, Oregon,
Easiest way to tell a 750 apart from a 900 is the clutch. If it has a dry clutch it's a 900, if not it's a 750, 620, or 600. If it is a 900 look at the heads and look for a V2 stamped in them (I believe) and that will tell you if it has the larger valves. If I was home I would run out and look at mine to let you know exactly. That would be a quick dirty way to find out what the engine is, I don't know how to decode the engine numbers.
2001 M900Sie - Mine - 2006 Buell Blast - Wife's - 1971 Yamaha R5-350 - Work in progress - 1971 Yamaha R5 - Waiting to be a work in progress