Stromberg Carlson Products BC-204 User manual

StrombergCarlson.com • 231.947.8600
STEP 1 STEP 2
NOTICE
The sliding
teeth face
this direction
INS-BC204-C 10.27.2022
Four Bike
Platform Mount Carrier
Model: BC-204
Assembly Instructions
Four Bike Platform Mount Carrier BC-204
Assemble the primary frame by connecting the Short
Support Base Assembly (part #1) and (2) Horizontal
Arms (part #2), using (2) 5/16” knob, (4) 5/16” flat
washer, (2) 5/16” spring washer, (2) 5/16” hexagon
bolt, (2) M10 Carriage bolts and (2) M10 Locknuts
(parts #3, #4, #5, #6, #27 and #28). (See Figure 1)
nFits 2” receiver
nTilts down for access to vehicle
nWheel mounts adjust to any size frame
nTire cradle ts up to 2-1/2” wide tire
(BC-2FT Fat Tire Adaptor available)
nWeight capacity 160 lb
Tools Needed
(1) 17mm Open Wrench
(1) 19mm Open Wrench
(1) 24mm Open Wrench
FIGURE 1 FIGURE 2
Place Vertical Arm (part #7) into the Short Support Base Assembly
by using M10 Carriage Bolt and M10 Locknut (parts #27 and #28).
With the Vertical Tube in a vertical position, insert the 5/16” hexagon
bolt (part #6), through the 5/16” flat washer (part #4), the 5/16”
spring washer (part #5) and the 5/16” flat washer (part #4), tighten
with 5/16” knob (part #3). (See Figure 2)
NOT TESTED ON OR APPROVED
FOR E-BIKES
14-1/4"
19 -1/4"
10"
10"
2-1/2"
Fits 2"x2" receiver
BC-204
1-3/8" square tubing
51-1/2" long
32"
6"
7"

Four Bike Platform Mount Carrier BC-204
STEP 3
STEP 4
STEP 5
STEP 6
Attach Folding Shank (part #8) to Short Support
Base Assembly tube, using M16 Bolt and M16
Locknut (parts #9 and #12) and using 5/8” Pin
and Clip (parts #10 and #11) for extra safety.
(See Figure 3)
Assemble the extension frame. Repeat
step 1, connecting Long Support Base
Assembly (part #13) and (2) Horizontal
Arms (part #2) by using (2) L-Pins,
(2) M10 Carriage Bolts, (2) M10 Flat
Washers and (2) M10 Locknuts (parts
#3, #4, #5 and #6).
See (Figure 4)
Repeat step 2, placing Vertical Arm (part #7)
on the Long Support Base, using 5/16” knob,
(2) 5/16” flat washer, 5/16” spring washer, 5/16”
hexagon bolt, M10 Carriage Bolt and M10
Locknut (parts #3, #4, #5, #6, #27 and #28).
(See Figure 5)
Insert the Long Support Base (part #1) into
the Short Support Base (part #13), controlling
the height by inserting the Short Stabilizing
Pin, 1/2” Flat Washer and 1/2” Spring Washer
(parts #14, #15 and #16). Insert Clip (part #11).
(See Figure 6)
FIGURE 3
FIGURE 4
FIGURE 5
FIGURE 6
NOTICE
The sliding
teeth face
this direction

Four Bike Platform Mount Carrier BC-204
STEP 7
STEP 8
STEP 9
STEP 10
Slide the Left and Right Cradle Assemblies
(parts #17 and #18) onto the Horizontal
Arms. Release the knob of the left and
right cradle. The knob should be
facing up and the loop end of
cradle should be facing
outward and upward. Insert
the cradles in sequence as shown below
in Figure 7. After all 4 cradles are on the
Horizontal Arms, tighten. (See Figure 7)
Install the (2) Long J-Hook Assemblies
(part #19) and (2) Short J-Hook Assemblies
(part #20) onto the Vertical Arm, then
tighten the (2) Eyebolts (part #21). Put
the Reflector (part #22) in the hole of the
square tube. (See Figure 8)
NOTE: Eyebolt provided for use
with customer provided bike cable
and lock, to prevent bicycle loss.
Insert the Folding Shank into the 2” receiver hitch,
using the Long Stabilizing Pin, 16 Flat Washer, 16
Spring Washer and Clip (parts #23, #24, #25 and
#11) to secure.
(See Figure 9)Load inner bicycle first. Loosen the 5/16 “knob and expose the head
of the 5/16” hexagon bolt outside the support base assembly, then
rotate vertical tube down. (See Figure 10)
FIGURE 7
FIGURE 8
FIGURE 10
Mounting Bikes
The wheel cradles and J-Hooks are completely adjustable
and slide on the tubes.
FIGURE 9

Four Bike Platform Mount Carrier BC-204
STEP 11
STEP 13
TILT DOWN FEATURE
STEP 12
STEP 14
STORAGE FEATURE
Wheel Cradle Strap
Rotate vertical tube to vertical position and lock with the
5/16 “knob. Lower J-Hook
assembly down over
bicycle frame.
(See Figure 12)
Load second/third/forth bicycle as described in Bicycle Mounting
steps 2 thru 5. Reverse direction of second/third/forth bicycle to
prevent handle bar
interference.
(See Figure 14)
Loosen the 5/16” knob, rotate the support tube to
the vertical states, and then tighten the 5/16”
knob. (See Figure 16)
FIGURE 11
FIGURE 13
FIGURE 15
FIGURE 12
FIGURE 14
FIGURE 16
Load bicycle into Wheel Cradles. Adjust cradles to
appropriate position. Ensure
tire is well supported at
both ends of Wheel
Cradles. Tighten
cradles to
prevent
movement.
(See Figure 11)
Loop (1) Wheel Cradle Strap (part #25) over each wheel and
secure. (See Figure 13)
Do not place bikes on the wheel cradle when operating
the tilt down feature. For access to the rear of vehicle,
remove 5/8” pin and allow the rack to tilt downward.
For safety, be sure to securely
hold the bike rack while the
pin is out. (See Figure 15)
WARNING – DO NOT
attempt to pull out
the main locking pin
or back-up locking
pin while there are
bikes mounted to
the carrier.
WARNING – Failure to use wheel cradle straps may
result in bike falling off rack during use.

Four Bike Platform Mount Carrier BC-204
HARDWARE KIT
FOLDED WHEN NOT IN USE FEATURE
Fold Vertical Arm to the horizontal position, and then fold
the Folding Shank Assembly to the vertical position.
(See Figure 17)
FIGURE 17
PART # DESCRIPTION QTY
1Short Support Base Assembly 1
2Horizontal Arm 4
35/16” Knob 6
45/16” Flat Washer 12
55/16” Spring Washer 6
65/16” Hexagon Bolt 6
7Vertical Arm 2
8Folding Shank 1
9M16 Bolt 1
10 5/8”Pin 1
PART # DESCRIPTION QTY
11 Clip 3
12 M16 Locknut 1
13 Long Support Base Assembly 1
14 Short Stabilizing Pin 1
15 1/2” Spring Washer 1
16 1/2” Flat Washer 1
17 Left Cradle Assembly 4
18 Right Cradle Assembly 4
19 Long J-Hook Assembly 2
20 Short J-Hook Assembly 2
PART # DESCRIPTION QTY
21 Eyebolt 2
22 Reflector 1
23 Long Stabilizing Pin 1
24 16 Spring Washer 1
25 16 Flat Washer 1
26 Wheel Cradle Strap 8
27 M10 Carriage Bolt 6
28 M10 Locknut 6
29 Circular Key 1
6
27
28
15 11 5
4
24
1021
9
1423
16
25
12

Four Bike Platform Mount Carrier BC-204
StrombergCarlson.com • 231.947.8600
ASSEMBLY DIAGRAM
PART # DESCRIPTION QTY
1Short Support Base Assembly 1
2Horizontal Arm 4
35/16” Knob 6
45/16” Flat Washer 12
55/16” Spring Washer 6
65/16” Hexagon Bolt 6
7Vertical Arm 2
8Folding Shank 1
9M16 Bolt 1
10 5/8”Pin 1
11 Clip 3
12 M16 Locknut 1
PART # DESCRIPTION QTY
13 Long Support Base Assembly 1
14 Short Stabilizing Pin 1
15 1/2” Spring Washer 1
16 1/2” Flat Washer 1
17 Left Cradle Assembly 4
18 Right Cradle Assembly 4
19 Long J-Hook Assembly 2
20 Short J-Hook Assembly 2
21 Eyebolt 2
22 Reflector 1
23 Long Stabilizing Pin 1
24 16 Spring Washer 1
PART # DESCRIPTION QTY
25 16 Flat Washer 1
26 Wheel Cradle Strap 8
27 M10 Carriage Bolt 6
28 M10 Locknut 6
29 Circular Key 1