Table of Contents
Section 3: Adjustments
Belt Tension Adjustment
Belt must be properly tensioned at all times to avoid excessive flopping and slipping. A loose belt will also cause poor cutting and premature wear.
Check tightness of belt regularly, especially when working the first few hours.
Always retighten or check belt after
Refer to Figure
4.Loosen main pivot bolt.
5.Tighten nut on belt tension bolt until you have a 3/4” deflection using approximately 32 lbs. of force at midpoint between pulleys. Tighten main pivot bolt. Refer to Figure
Pivot |
Bolt |
Tension Bolt |
21032 |
Belt Tension Adjustment
Figure
32 lbs at Midpoint |
3/4” |
20766 |
Belt Deflection
Figure
Cutting Height
Refer to Figure
Cutting height can be adjusted with the upper
Maximum cutting height of 2 3/8” is achieved when the discs are parallel to the ground. Adjustment of cutting height is achieved by altering the cutter bar tilt angle.
This is done by varying the upper
To minimize blade and disc wear, improve grass regrowth and get maximum nutritive value from the crop, minimum cutting height should never be adjusted less than 1 1/4“.
20796
Cutting Height
Figure
20 DM3705, DM3706, and DM3707 Series Disc Mowers | 9/15/06 |