Install bar supports and attach using 1/2" x 3-1/2" bolts, flatwashers, and nuts. Refer to Figure 4.

Figure 4

Install grapple swing arm assembly to pedestal using 1-5/16" x 6-5/8" pins. Install grapple cylinders to grapple pedestals using 1-1/8" x 6-1/2" pins. Install grapple cylinders to swing arm using 1-1/8" x 4-1/2" pins. Secure all pins using clevis pins and cotters. Install 90° fittings into cylinder ports and rotate into position shown. Refer to Figures 5 & 6.

Figure 5

Figure 6

Install grapple tines to swing arm using 3/4" x 2-1/2" bolts and locknuts, 8 places. Refer to Figure 7.

Figure 7

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Bush Hog 3860 QT manual