Operating Instructions for F41 Harrow
Your new AMCO offset disk harrow has been set up, inspected, and adjusted by your dealer before delivery. However,
before using your new harrow, or one that has been stored, check to make certain that all nuts and bolts are tight, all
cotter pins spread, and that the harrow has been lubricated.
This instruction manual should be carefully and thoroughly read to enable the operator to care for and operate the
The right and left hand sides of the harrow are determined by standing at the rear of the harrow and facing the direction
Refer to your tractor operator's manual for complete tractor operating instructions.
ADJUSTMENT FOR LEVEL DISKING: It is recommended that the tractor be operated at a speed best suited for soil
conditions. High-speed disking will sometimes result in excessive lateral movement of the soil. This may leave an
uneven surface behind the disk harrow known as "ridging" or "furrowing".
When disking In a cover crop or where the land is to be reworked, an uneven surface is not objectionable. If the land is
to be bare through the winter, furrows and ridges will reduce soil washing, and will help catch and hold moisture, resulting
in more water being absorbed by the soil.
FEATHERING BLADES: The use of feathering blades with smaller disks will move the excess soil back which is thrown
out by the front gangs at high speeds. By using the feathering blades, the outside furrows are partially filled, giving a
more uniform job of disking.
GROUND SPEED AND ADJUSTMENTS: Where it is necessary to have a level job of disking, the following factors must
be taken into consideration: (1) tractor speed, (2) hitch adjustment, and (3) disk gang angle adjustment.
TRACTOR DRAWBAR: It is suggested that the tractor drawbar be set so it is free to swing when disking. This will
prevent side draft, making operation of the harrow easier. The tractor drawbar will pull somewhat to the left side during
operation. This is normal with an offset harrow.
HARROW HITCH: The harrow pull tongue can be offset to the right or left by using the set of holes in the cross tongue
plates to obtain the desired offset.
SPRING LOADED STABILIZER: Penetration o0 front and rear gangs may vary. The spring loaded stabilizer may be
adjusted to level the harrow front rear. In extremely hard ground it may be necessary shorten the stabilizer to force the
front or penetrating gang into the ground. In normal conditions, the stabilizer should be adjusted so that the disk harrow
level front to rear while disking. The stabilizer may also be adjusted to level the unit for transport.
The type of work to be done by the harrow will determine the type of adjustment to be made.
Observe the harrow while It is working and check i the dead furrow is being filled and the ground left level. If not, an
adjustment will have to be made.