I'd like to know what/why there isn't more info available? Is this task a trade secret?? I've been looking for days!! and can't even find a decent cross refference for belts. I got a Gates belt from O'Reilly's only cuz I had the broken drive belt with me.I have Craftsman/Murray Model 502.255050.Looks like I may need to remove the blade belt & may want to replace it too but don't want to cut it off.Nor do I want to pay a service call fee for something that seems should be an EASY repair.I'd just like some idea of the procedure that could save me time & effort. I can find plans for a nuclear reactor, why not replacing a lawnmower belt????