GDS968;
If you have a ride height tool......
You MUST have a zero point to reference from.....
Loosen your pinch bolts and rotate the hub all the way forward, put a mark on the swing arm with a felt pen to the left
of the torque spec sticker......mark the edge of the hub aligned with the mark on the swing arm
Lift the chain off
Now rotate the hub all the way backward......make another mark on the edge of the hub
Measure between the 2 marks on the rim of the hubs and split the difference
Make a permanent mark on the hub, a centerpunch mark will do
Do the same thing on the swing arm
Now every time you want to play with the suspension you have a zero point to reference.......
You really don't, need the tool, just measure from the stand as in the manual to a bolt or place on the frame
Your number will be different......but you will always be able to go back to zero......if you align your marks
Suspension settings are subjective......just keep a record of your changes......so if you go the wrong way.....
You'll be able to go back, to what worked before
No marks on mine......changing shock and going to a longer swing arm