Disk as deep as necessary to do a thorough job but do not try to disk to an excessive depth. In most conditions, your
AMCO harrow has ample weight for penetration. In other conditions, you may have a little more weight than you really
need. Your harrow should be equipped with flotation tires for these conditions. 9.5L x 15 tires will be adequate for most
conditions. You also need a good heavy duty, 4 x 8 hydraulic cylinder with stroke control. This will allow you to control
your harrow cutting depth to meet all conditions. You should never allow soil to "bulldoze" ahead of or flow over the axle
and spacer spools. Cutting depth should be controlled to avoid this situation. Maintaining proper cutting depth will have
the following advantages:
1. Increased life of gang bearings.
2. Less strain on disk harrow frame. Therefore, the harrow will last longer.
3. Less load on your tractor engine and drive train.
4. Lower fuel consumption due to less load on tractor engine.
5. Less wheel slippage and less rear tractor tire wear due to lower load.
6. Higher tractor travel speeds due to less rear wheel slippage.
Therefore, by properly controlling the cutting depth, you can increase gang bearing life and cover more acres per day at
a lower cost. In most cases it will not be necessary to reduce cutting depth by more than 1/2".
GANG LATERAL ADJUSTMENT: Front and rear gangs may be moved laterally for adjustments in extreme conditions.
To make lateral gang adjustments, loosen the bolts that secure the gang frames to the main frame. Be sure to re-tighten
the clamp bolts after making the adjustments.
SCRAPER ADJUSTMENT: Your harrow is equipped with heavy duty scrapers. The scrapers should be adjusted so that
the blade of the scraper slightly touches the disk blade yet allows the gang to turn freely. Each scraper can be adjusted
individually by loosening the carriage bolt and sliding the scraper to the desired position. Always re-tighten the carriage
bolt.
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