adjusting Banshee front shocks????

I bought a set of banshee front shocks for my blaster, I know they bolt right up but i need to adjust them first! On the bottom of the spring there is like a dial but i can't turn it, do i have to lift the quad after there on to adjust them... Let me know any suggestions. The blaster ones are the same, just never had to adjust them they were on the softest when i got the quad.