I can't find it in the oem shop manual. I would think if they don't specify then it is standard rt hand thread. it just says remove the bolt, remove the pulley using a suitable puller. My impact gun is a weak one that came with my sears compressor. My Harbor Freight strap wrench isn't even worth the $4.99 I paid. time to get a stronger impact wrench.
Once I get a new belt, the plan is to check compression. If its good, I continue, if not, off with the heads.
As always thanks again for your support.