To begin the calibration of the grain drill, first, partially close each seed gate; then pour some grain into the seed box. Place a canvas under the drill to catch the grain. Be sure that the canvas is under all seed tubes. Lay a board under the drill to protect the canvas when the furrow openers are lowered to operating position.

The right-hand wheel is the driver, and is held in place by means of a large spring cotter, while the left-hand wheel is held by the two collars, one on each side of the wheel. See that the wheels are in line with the runners. For a team of average size, tongue casting should be in the center adjustment, raising or lowering according to the size of the team so that the front runs level.

Tests on wheat and coarser grains have shown that a high speed gear, resulting in a faster revolving feed shaft, and with the fluted feed cylinder partially closed, will produce a more even and continuous flow of seed than a low speed gear setting with the cylinder opened sufficiently far to sow the same amount of seed. This is true unless the seeds are so dry or so large that a narrow opening of the fluted cylinder would cause them to crack.

The most satisfactory method of sowing any of the small grains is with the grain drill. The largest yields are obtained from fields where the seed have been deposited evenly and in the right amount in a firm, compact soil and covered at a uniform depth. It is practically impossible to secure these conditions when the seed are sown with a broadcast seeder.

Grain must not be left in box after seeding. To clean box, drop gates. Disks and other important parts of machine would be covered with oil or grease, and the machine put under shelter. Good treatment prolongs the life of your machine.