Front sprocket sizes

[limax2]

[quote author=taurus66 link=topic=13820.msg156253#msg156253 date=1404027052]
I have gone two up on the front and two down on the rear on my w reg fazer 600, made a great difference. Still pretty quick pulling off. Now at 70mph its revving at just about 4750 rpm. Used to get about 220  to 240 miles per tank. So will see how much differce the change makes if any.

I'm thinking of doing the same on our 03 Fazer, but, out of interest, how many teeth on each sprocket now - is that 17 on the front ?


And how many on the rear ?


Cheers
[/quote]


That would now be 17 front and 46 rear.  Standard is 15 front and 48 rear.
For interest, going up one on the front gives approx. the same effect as going down three on the rear. Going down too much on the rear would cause the chain to rub more on the slider on top of the swinging arm.
If changing the front sprocket you may as well fit the thicker (12mm) sprocket nut at the same time if not already done so.
Yam Part number 90891-10124 for nut and lock-washer kit.