Question:
I have a DRT900H. It has a growling gear noise. When pushing it in neutral (engine off)it rolls for a bit and then slows down and makes a horrific noise like growling gears. I checked to see if it had grease in the transmission by removing the zirk fitting and probing with a thin wire. The wire showed a small amount of red grease. However, the zirk fitting was absolutely clean on the inside and on the back side. It had never been greased. This is a new unit. Does the factory grease these units before shipping? Did it miss the "add grease" operation?