First of all welcome to the Tractor Forum!!
Second its always hard to locate parts for older machines like yours. I don't know if you have checked on the internet and googled your model. When I do it gives lots of sources for more info. Of course you can also check on ebay etc. Good Luck and let us know if you are successful.
Stupidity is exasperating. Willful ignorance is bulletproof.
Having government manage your health care is like having Michael Vick watch your dog.
Democracy is 2 wolves and a lamb voting to see what they will have for lunch. Liberty is a well armed lamb contesting the outcome of the vote.