Originally Posted by PA/XFIRE
FYI, The gap between the back of your new pulley and the sc magnetic clutch disc should be between 20 and 30 thousants of an inch. Add a spark plug gapping tool to your tool box if you don't have one. good luck with the install.
ILLCYA 
I measured the stock pulley before the install and it had a clearance of 45 mm. (Isn't it still called a feeler gauge?) My Code 3 has a hair more than 45 mm but it works without issues. I was watching the pulley free wheel the other day at idle. Boy am I easy to entertain!
Les