The best place to start asking questions is the manufacturer of your machine. Terramite - 800-428-3772. Just ask for parts. If you need maintenance help ask for Paul. Great folks to deal with and a free call.
I used to have manuals for the T3-14 on disk, I will look threw my stuff and let you Know. Buy the Way Hi Guys been awhile since I've been on here since I sold mine. Sure do miss it