Bison BA781 Quick guide

1
¨ Inspect all contents prior to installation. Report any missing parts to dealer immediately.
¨ Read all instructions before proceeding.
—— Installation and Safe Use Manual ——
MODELS: BA781, BA778, BA776, BA781DB, BA778DB,
BA776DB
Adjustable Height Single and Double Sided Pole Systems
Implementation Date: 5/3/23 Rev: 1 N.J.C. File: E:\Pub\Instructions\Pole Systems Ref#:920478 L.M.
Customer Service
[phone]
P A R T S L I S T
Item Qty.
Double
Sided
Description Item Qty.
Double
Sided
Description
E 2 Extension Brace (BA781, BA781DB only) U 4 3/8” x 6” Hex Bolt (BA776DB Only)
F 5 Band Clamps (5 on BA781, 9 on BA781DB) V 4 1/2” x 7” Hex Bolt (BA778DB Only)
H 2 Rim and Net (ordered separately) X 8 1/2” Flat Washer (3/8” on BA776)
I 0 1/2” U-Bolt (3/8” on BA776) Y 4 1/2” Lock Washer (3/8” on BA776)
L 5 5/16” Flange Nut (5 on BA781, 9 on
BA781DB)
BB 4 1/2” Thin Jam Nut
M* 4 7/16” x 1 1/2” Carriage Bolt CC 2 1/4” x 1” Roll Pin
G 2 Backboard (ordered separately) W 4 1/2” x 8” Hex Bolt (BA781DB Only)
B 2 Extension Arm R* 8 3/8” Flat Washer
K 5 5/16” x 2” Carriage Bolt (5 on BA781, 9 on
BA781DB)
AA 4 1/2” Square Head Set Screw
A 1 Pole Q* 4 3/8” x 1” Hex Bolt
J 1 Pole Caps Z 4 1/2” Hex Nut (3/8” on BA776)
C 2 Backboard Mounting Adapter S* 8 3/8” Lock Washer
D 4 Backboard Brace T 4 3/8” Hex Nut
N* 4 7/16” Flat Washer DD 1 Pole Pad (optional)
Qty.
Single
Sided
1
1
1
2
1
3
1
1
2
1
3
3
2
2
O* 2 4 7/16” Lock Washer EE TBD Quick Dry Concrete (supplied by
costumer)
P* 2 4 7/16” Hex Nut
Qty.
Single
Sided
2
6
6
0
0
0
0
4
4
4
2
2
1
1
TBD
*Use depends on Backboard (G) model selected.
Additional quantities of some items included on BA781, BA781DB, BA776DB and BA776DB, Double
Sided Pole Systems.
¨ Inspect all contents prior to installation. Report any missing parts to dealer immediately.
¨ Read all instructions before proceeding.
¨ Save this instruction in the event that the manufacturer must be contacted in the future.
WARNING!
Improper installation, maintenance or use may cause product failure and serious personal injury.
1. Call your local utility locator service, usually by dialing 811, before digging to avoid serious injury or
service interruption.
(Also applies to arm and brace only orders BA776A, BA778A, BA781A, BA77XBR)

2
2. Select the location for the concrete base footing based on
safe play area of the selected pole system. See Figure 11.
Dig a 12” diameter hole that is a minimum of 36” deep,
(48” deep on BA778 and BA781) remove additional soil
from the bottom 1/3 - 1/2 of the hole in a bell shape to
add pole stability. In areas where the normal frost line is
below 36” it is advisable to dig to the normal frost line.
See Figure 1.
3. Make sure that you have a level and a broomstick or
similar pole to vibrate air pockets out of concrete. A 12”
diameter by 36” deep hole with a bell bottom will require
approximately 3 cubic ft. of 3000 PSI
Quick Dry Concrete (EE). If the hole is 48” deep, it will
require 4 cubic feet. You will need to adjust the amount
depending on the size of hole you prepared. Having too
much onsite is better than having too little.
4. Attach one Band Clamp (F) with 5/16” x 2” Carriage
Bolt (K), and 5/16” Flange Nut (L) approximately 12”
from the bottom end of pole. See Figure 1.
5. Mix concrete according to the directions on the bag. It is
advantageous to have the mixture “wet”. This will
increase your working time and allow batches to mix in
the hole. Pour the hole full to ground level.
6. Consult Figure 11 to determine the proper dimensions to
the top of the Pole (A) from the finished playing surface.
Insert Pole (A) into the concrete while vibrating concrete
to allow it to surround the Pole (A) completely. You will
need to brace the Pole (A) to maintain Pole (A) height
and insure that the Pole (A) stays plumb until the
concrete cures.
7. Trowel the top of the concrete and clean excess from
Pole (A). Allow the footing to cure for at least 48
hours. Only after the concrete has cured you should
proceed.
8. On BA778 and BA781 single sided pole systems attach
the Extension Arm (B) to the Pole (A) using 1/2” U Bolts
(I), 1/2” Flat Washers (X), 1/2” Lock Washers (Y), and
1/2” Hex Nuts (Z). Use 3/8” hardware (R)(S)(T) on
BA776 Pole Systems. See Figure 11 to determine the
proper height from the bottom of the Extension Arm (B)
to the actual playing surface. Tighten all hardware.
See Figure 2.
9. If you are installing a double sided adjustable height pole system, substitute appropriate size hex bolts,
washers, lock washers, and nuts provided to attach two Extension Arms (B) back to back at the same
height, then proceed to #10 below to add Backboards (G) and Rims (H). Disregard any unused hardware.
See Figure 3.
FIGURE 1
FIGURE 2
FIGURE 3

3
10. Slide two Band Clamps (F) onto each Extension Arm (B). Attach Rims (H) and Backboards (G) to the
Backboard Mounting Adapters (C) using the hardware provided with the Rims (H). See Figure 4 and
Figure 5.
11. Place the Backboard Mounting Adapter (C),
Backboard (G), and Rim (H) assembly on to the end
of the pole. It is easiest to place assembly onto the
end of the pole upside down and then rotate 180°
before installing and tensioning the 1/2” Square
Head Set Screws (AA) and 1/2” Thin Jam Nuts
(BB). Confirm that the Rim (H) and Backboard (G)
are level. Tighten the 1/2” Square Head Set Screws
(AA) against the Extension Arm (B), then tighten
the 1/2” Jam Nuts (BB) to lock the 1/2” Square
Head Set Screws (AA). See Figure 6.
12.Use the Backboard Braces (D) to add stability to the
Backboard (G). Exact method of attachment will
depend on the Backboard (G) being used. In all
cases the Backboard Braces (D) will need to have
the two ends bent to match the appropriate angle
between the Band Clamps (F) and the mounting on the
rear of the Backboard (G). This can easily be
accomplished in a number of ways including contacting
the end of the Backboard Braces (D) on a concrete
surface. For fan-shaped or rectangular Backboards (G)
with horizontal slots in the rear use
7/16" x 1 1/2" Carriage Bolts (M), 7/16" Flat Washer (N),
7/16" Lock Washers (O) and 7/16" Hex Nuts (P) on the
backboard end. See Figure 7.
For Backboards with 3/8" threaded holes in the rear of the
Backboard (G) use 3/8" x 1" Hex bolts (Q),
3/8" Flat Washers (R) and 3/8" Lock Washers (S). In all
cases the lower end of the Backboard Braces (D) are
attached to the Band Clamps (F) using
5/16" x 2" Carriage Bolts (K) and 5/16" Flange Nuts (L)
tighten all Backboard Brace (D) hardware only when
Backboard (G) is plumb and rim is level.
See Figure 8.
FIGURE 4
FIGURE 5
FIGURE 6
FIGURE 7

4
FIGURE 9
13. Drill a 1/4" diameter hole into the Extension Arm (B) using
the pilot hole in the Backboard Mounting Adaptor (C) as a
guide. Insert 1/4" x 1" Roll Pin (CC) with a hammer to
reduce risk of rotation or movement. See Figure 9.
14. BA781 and BA781DB pole system includes an
Extension Brace (E) to add additional stability to the
72" Extension Arm (B). Use Band Clamps (F),
5/16" x 2" Carriage Bolts (K) and 5/16" Flange Nuts (L)
to attach each end of the Extension Brace (E) to the
Pole (A) and Extension Arm (B). See Figure 10.
FIGURE 8
FIGURE 10

5
15. Attach Nets (H) and Optional Pole Pads (AA) if applicable.
16. System is ready for play.
FIGURE 11