There is not much difference in these pics, but here you can
see where I marked the midpoint of the belt, and am using the head of the Combination Square as a reference point for measuring
on the scale on the belt tension gauge.
|Deflection Measuring Tools
The belt deflection should be between 1/4" and 3/8" for the
XR1200. Personally, I'll set a stock rear end at 3/8". And, because a raised rear end pushes the swingarm out
of its design range for the idler wheel, I'll set a XR1200 with riser blocks to about 5/8" of deflection - which will keep
the belt deflection looser than 1/4" through the movement of the swingarm.