I have a Kubota grey import (manual says it is a B1500 - 1600 series. The hydraulics in the front loader blocked leading to over pressure and thus blowing the seal in the pump. Result hydraulic fuel in the engine and then on my lawn via the breather tube. I am in France so as soon as I turn up at the dealer they will not supply without a serial number, which I don't have. Can any one out there help?? At the moment it runs beautifuuly but I can't use my front loader.