Shannon,
JDParts is one of the best, and most overlook resources we have. When you register, you get to select your dealer, which means you can check their inventory, but you also can find specifications on items, like belts. Here's the specs on the drive belt for a 100 lawn tractor from JDParts:
Oh, and one more thing, I wouldn't use anything other than JD belts anyways as they're made to JD's very define specs - aftermarket belts will not be and you will not get as good performance from the after market belts. Use JD belts.
(Message edited by treed on March 17, 2011)
JDParts is one of the best, and most overlook resources we have. When you register, you get to select your dealer, which means you can check their inventory, but you also can find specifications on items, like belts. Here's the specs on the drive belt for a 100 lawn tractor from JDParts:

Oh, and one more thing, I wouldn't use anything other than JD belts anyways as they're made to JD's very define specs - aftermarket belts will not be and you will not get as good performance from the after market belts. Use JD belts.
(Message edited by treed on March 17, 2011)