First time I'm changing all the filters on my recently purchased jd970. I picked up all the filters, oil, fuel, and hydraulic from the local jd dealer. When I changed the fuel filter by the injector pump, I noticed another fuel filter similar but a little smaller on the outlet of the fuel tank.It doesn't show up in my parts manual. Any one ever experience this to. I don't know what to order other than take it off and go match it up at the dealer.