A fuel injection nozzle has a cylindrical nozzle body having a cavity where fuel passes through. In one practice a dye-dilution seepage meter is employed as a device for locating water sources. The drawer is installed with a pair of continuous tilting ribs having portions with different inclination orientations, which enable the drawer to be tilted at two tilting angles when the drawer is pulled outward from the housing along the guide rails. The grooming reel also carries a plurality of helical brushes that are also spaced from one another around the circumference of the grooming reel, the helical brushes being disposed between the helical blade tip flights.