Hi guys just bought a used bobcat 773 fuel gauge is not working.I tested gauge with remote ground and it works. Suspect sending unit. Went looking for it cant even find the tank.Raised cab and traced filler hose down to area behind rear passenger tire. How do i get to tank cant even see it. Great on drag cars dont no squat about skid steers. could use some help from sombody whose been there done that. Thanks jim1