Originally Posted by magredvet
Hey Glenn I don't know offhand, but I can go and measure mine for you, if you indicate which pulley it is, as there is a small idler pulley under the supercharger also.
It is the pulley just to the left where the water hose goes into the engine, It has a bolt going into it. Looks like a 15MM size ratchet would fit. I tried posting a picture here, but didn't have any luck. It is a jpg file but it won't upload. I inserted the picture in a Word File and attached. Sorry for the poor quality I used my phone and flashlight.
Thanks,
Glenn