Tar River BDR-135 Operator's Manual page 21

Adjusting the Mower
Determining the length of the upper connector.
After repositioning the mower to the operating position, the stump jumpers should be positioned parallel to the
ground and the suspension frame should be positioned at such a height so the distance "a" is about 11 inches
and the pin is in the middle of the longitudinal opening of the push rod (Drawing 2). Adjustments should be
made with the help of the upper connector and the tractor's right lift arm brace. To ensure the proper operation
for the mower, the suspension frame should be supported by a chain connected with the clevis fastener or its
bracket.
The proper alignment of the cotter pin on the engagement rod.
The mower may be positioned at any cut height 32 mm (low), 40 mm, or 44 mm (high). The mower is set to
the middle height of cut. A spacer ring (Position 3 in Drawing 3) may be used to adjust it, which is installed on
the operating drums between the stump jumper's hub (Position 7 in Drawing 3) and the resistance disk
(Position 6 in Drawing 3).
Attaching to Tractor Attaching PTO Shaft
Operation
Proper operating mode of the mower.
Rev. 08/22