PTO Driveline Length

Table 1: Tractor Horsepower (6-8) vs. Unit Width

	Width	Minimum Horsepower

	15′	90

	20′	120

	22′	132

	25′	150

	27′	162

Figure 2. Tractor Front Weight

3. 3-Point Hitch

The 3-point hitch models require that the tractor be equipped with a Category II or Category III 3-point hitch. If the hitch can be converted from one to the other, use a Category III to provide a wider stance and more stability.

Use the upper top link hole for Category III and the lower hole for Category II as shown in Figure 3.

For easier attachment, use a quick hitch. If not using a quick hitch, use optional hitch extension.

4.Hydraulic Requirements when Using Center Cutter Options

The tractor hydraulic system must be capable of 8 gpm (30 lpm) at 1500 psi (10,335 kPa). Either closed-cen- tered or open-centered systems can be used.

5. Load Sensing Hydraulics (3-Point Models Only)

Many newer tractors are equipped with “load sensing” hydraulics. The operator is responsible for setting the tractor hydraulic system to provide “float” on the 3-point hitch. Refer to the tractor manual for specific instruc- tions.

The “float” feature will allow the unit to follow the ground contours during operation. This applies to 3- point mounted machines only.

6. Drawbar (Pull-Type Models Only)

The tractor drawbar must be set to provide 16" (406

mm)on 1-3/8 - 21 or 20" (508 mm) 1-3/4 - 20 between the end of the PTO shaft and the center of the drawbar pin for all 1000 rpm PTO. See Figure 4. This dimension will provide the required clearance for the CV (Con- stant Velocity) joint on the front of the driveline.

NOTICE

■Do not use PTO shaft adapters. They will change the drawbar dimension and can cause driv- eline failures.

NOTE: On pull-type models, do not cut driveline.

Upper Top Link Hole

Figure 3. 3-Point Hitch Attachment

1000 RPM 16” or 20”

Figure 4. Drawbar Dimension

(3-Point & 2-Point Models Only)

The unit is equipped with a PTO driveline long enough to fit any tractor and 3-point linkage system.

The operator is responsible for measuring the dimen- sions of the driveline through its working range. These dimensions will indicate if the driveline requires short- ing to operate on the particular tractor/unit attachment system. The operator must check dimensions before using the unit for the first time and each time a different tractor is used with the unit.

Use the following procedure when determining drive- line dimension:

16 Operation	MAN0506 (Rev. 9/5/2008)