If you have water coming out of the drum shaft then the shaft seal inside the drum is faulty you wont reach it by just removing the pulley, you will need to split the tank and remove the drum. Anyway to answer your question i have only ever found the pulley retaining bolts to be right hand thread eg "normal type of thread". But the bolts are quite often coated with a Loctite solution to prevent them coming loose and can be B........ (difficult to remove)
Kenjo
February 2014