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WARNING: Bikes or rack falling in road can cause serious accidents resulting in bodily injury—do not use rack on any

vehicle on which it can not be properly mounted as described in this instruction sheet.

• Rack should only be used on vehicles with Class III or IV 2” receiver hitches.

NEVER use on trailer or front of vehicles.

• Bikes must be tied to rack using tie-downs, or additional straps if necessary.

• Check periodically during use taht all bolts and pins are tight, and that rack and bicycles are secure.

• Never carry more than 4 bicycles (

MAX CAPACITY: 140 LB) - no tandems, mopeds, or recumbents. Car tail lights

must remain visible. Bikes must be securely tied to rack. Use bike tie-downs, or additional straps if necessary.

• Drive conservatively, especially over bumps. Never use off-road.

• Do not use if any part of the rack is damaged, worn, or missing. Contact R. A. Allen Co., Inc. for replacement parts.

.

CAUTION:  

Use Allen S-645 only in accordance with local motor 

vehicle and traffic regulations.

• Install rack and load bicycles only at a safe distance away from

moving traffic.

• Make sure that all of rack and bicycles are kept at a safe distance

from road and hot exhaust.

• Only operate vehicle with rack in an upright, locked position.

• Bicycles should never extend beyond sides of vehicle.

• Remove rack from car, or fold carry arms down when not in use.

•  INSERT LOWER PORTION OF RR POST INTO

HITCH INSERT SO THAT THE HOLES AT THE

BOTTOM OF EACH PART LINE UP.

•  INSERT THE 3/8” X 3” BOLT THROUGH THE HOLE,

AND THREAD 1—3/8” LOCK NUT ONTO THE END

OF THE BOLT.

•  PIVOT THE RR POST INTO THE UPRIGHT

POSITION, SO THAT THE SECURING LATCH

SNAPS INTO PLACE.

• TIGHTEN NUT AND BOLT FIRMLY USING TWO

WRENCHES.

• INSERT CARRY ARM ASSEMBLY

INTO UPPER PORTION OF RR

POST, LINING UP THE HOLES

IN EACH PART.

• INSERT THE 3/8” X 2 1/2”

BOLTS THROUGH EACH HOLE,

AND THREAD 1—3/8” LOCK

NUT ONTO THE END OF THE

BOLTS.

• TIGHTEN EACH NUT AND BOLT

FIRMLY USING TWO

WRENCHES.

NOTE:  UPON COMPLETION, 

BOTH PARTS SHOULD BE FIRMLY  

JOINED TOGETHER.

.

IMPORTANT:  

WHEN RACK IS IN AN 

UPRIGHT POSITION, 

WIRE RETAINER ON QR 

CLIP SHOULD ALWAYS 

BE IN A CLOSED 

POSITION TO KEEP RACK 

FROM FALLING OVER 

DURING USE.

CARRY ARM ASSEMBLY

TOOLS REQUIRED:   2—9/16” WRENCH & 2—3/4” WRENCH; 

or 2  ADJUSTABLE WRENCHES

PARTS

HITCH INSERT

S-645 BOX SHOULD CONTAIN THE 

FOLLOWING ITEMS:

1-

CARRY ARM ASSEMBLY

1-

1—HARDWARE KIT,

CONTAINING:

2 - 3/8” X 2 1/2“ BOLT

1 - 3/8” X 3” BOLT

4 - 3/8” LOCK NUT

1 - 1/2” LOCK NUT

1 - 1/2” WOBBLE BOLT

1 - 70” BOTTOM STRAP

RR POST

1-

1- SPINE SHIELD

A.

ASSEMBLING RACK:

B.

STEP 1

STEP 2

3/8” x 2 1/2”

BOLT

3/8”

LOCK NUT

RR POST

HITCH INSERT

3/8” X 3”

BOLT

QR 

CLIP

3/8” 

LOCK NUT 

MODEL S645

INSTRUCTIONS

ENGLISH - PAGE 1

PRODUCT REGISTRATION:

 

MAKE SURE TO REGISTER YOUR PURCHASE AT 

http://allensportsusa.com/about/product-registration 

TO QUALIFY FOR PRODUCT WARRANTY AND TO 

RECEIVE IMPORTANT PRODUCT NOTIFICATIONS

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