Terry, I have a older Viking gear drive mower- the one with 2 tensioner pulleys on each wheel belt. They were called the posi drive system. My mower is a 1994. My model number is V48-14K-5 ser # 90287. I broke the jack shaft last week- the shaft that drives the wheel belts. After a lot of trouble trying to get the dealer to figure out what my mower is - can't really blame them they are sort of a new dealer- I hope, think we have the right parts ordered. Any way dealer said the part is back ordered and will take 8-11 days. What does back ordered mean. I really need this unit back and going. ten days seems like to long of a wait in todays world. The dealer is Troutville Va. Farm-store. Please E-mail me through the boards for my contact info.