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  40" X 48" ALUMINUM UTILITY TRAILER KIT

Owner’s Manual

  40" X 48" ALUMINUM UTILITY TRAILER KIT

Owner’s Manual

Important Safety Information

WARNING:

•  Read and understand all instructions. Failure to follow all instructions may result in serious injury.
•  The warnings, cautions, and instructions in this manual cannot cover all possible conditions 

or situations that could occur. Exercise common sense and caution when using this tool. 
Always be aware of the environment and ensure that the tool is used in a safe and responsi-
ble manner. 

•  DO NOT allow persons to operate or assemble this product until they have read this manual 

and have developed a thorough understanding of how the product works.

•  DO NOT modify the product in any way. Unauthorized modification may impair the function 

and/or safety and could affect the life of the product. There are specific applications for 
which the product was designed.

•  Use the right tool for the job. DO NOT attempt to force a small equipment to do the work of 

larger industrial equipment. There are certain applications for which this equipment was 
designed. It will do the job better and more safely at the capacity for which it was intended. 
DO NOT use this equipment for a purpose for which it was not intended.

•  Industrial or commercial applications must follow OSHA requirements. 

WARNING:

WORK AREA SAFETY

•  Inspect the work area before assembly. Keep work area clean, dry, free of clutter, and well lit. 

Cluttered, wet, or dark work areas can result in injury. 

•  Do not assemble the trailer where there is a risk of causing a fire or an explosion; e.g., in the 

presence of flammable liquids, gases, or dust. Assembly can create sparks, which may ignite 
the dust or fumes.

•  Keep children and bystanders away from the work area while assembling the trailer. Do not 

allow children to play on the trailer. 

•  Be aware of all power lines, electrical circuits, water pipes, and other mechanical hazards in 

your assembly area. Some of these hazards may be below the work surface hidden from your 
view and may cause personal harm or property damage if unintentionally contacted.

PERSONAL SAFETY

•  Stay alert; watch what you are doing, and use common sense when assembling and towing 

the trailer. Do not assemble or tow with the trailer while you are tired or under the influence of 
drugs, alcohol, or medication. A moment of inattention may result in serious personal injury.

•  Do not wear loose clothing, dangling objects, or jewelry during assembly. Loose clothes, 

jewelry, or long hair can be caught between parts. 

•  During assembly, use ANSI-approved safety goggles or safety glasses with side shields. Use 

a dust mask in dusty work conditions. Also use non-skid safety shoes, gloves, and hearing 
protection when appropriate.

•  Do not overreach. Keep proper footing and balance at all times.

Specific Operation Warnings

WARNING:

•  Before each use, always examine the trailer for proper tire condition and air pressure, 

damaged Tail Lights, damaged Side Running Lights, loose bolts and nuts, structural cracks, 
bends and any other condition that may affect its safe operation. Do not use the Trailer even 
if minor damage appears.

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•  Before each use, always attach the Safety Chains of the trailer to the towing vehicle. Make 

sure the Safety Chains are attached to the towing vehicle with the equal length at each side. 
Do not allow the Safety Chains to drag on the ground.

•  Always check to make sure the payload being transported properly and safely secured in the 

trailer. Load the Trailer evenly from side to side with 60% of the load forward of the Axle.

•  Make sure the towing vehicle is capable of towing this trailer and its payload. Make sure the 

hitch on the towing vehicle is capable of towing the Trailer and its payload. The towing 
capacity of the hitch is typically stamped on the hitch drawbar.

•  Make sure the hitch coupler and the vehicle’s Ball Hitch (not included) are of equal mating 

size (2in.) and are rated equal to or greater than the weight of the trailer and its payload.

•  Do not exceed 45 miles per hour when towing the trailer. Excess speed is a major cause of 

vehicle-trailer accidents.

•  The Tail Light Bulbs supplied with this trailer are for a 12 Volt DC electrical system only. Do 

not attempt to power the Light Bulbs with any other type or voltage electrical current.

•  Whenever possible, park the trailers on a flat, level, paved surface and chock both tries to 

keep the trailer from accidently moving. 

•  Before attempting to fold up the trailer, make sure it is on a flat, level, solid surface and chock 

both tires.

•  DO NOT exceed the 1715 pound weight capacity.
•  DO NOT allow anyone to ride in the towed vehicle or on the trailer.
•  The coupler must be properly secured to the hitch ball. After assembly and attachment, pull 

up and down on the hitch coupler to make sure the hitch ball is snug in the hitch coupler. If 
the coupler is not secured properly, it could come loose while the trailer is in motion, causing 
property damage, serious personal injury or even death.

•  Make wide turns when towing a loaded trailer, avoiding both sharp turns and U-turns. Turning 

too sharply can cause damage to the trailer and/or the tow vehicle.

Assembly Instructions

Warning: 

•  Beams have sharp edges. Wear work gloves to prevent cuts on hands and fingers.
•  Wear ANSI Z87.1 compliant safety goggles.

Read the following instructions step-by-step for easy assembly according to the complete parts 
and hardware list. Also be sure to read the licensing notice at the end.

NOTE: 

•  The trailer parts are called out by standing at the rear of the trailer looking forward toward the 

coupler (left & right).

•  Do not fully tighten any nuts and bolts until the entire trailer is assembled. Installing the 

plywood deck (not included) is the last step after tightening all the nuts and bolts.

1. Open the boxes and check the contents of the two boxes to ensure that all parts are present:
Box 1
1 hardware kit
2 wheels
2 fenders
2 fender brackets

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2 leaf springs
2 hubs
1 coupler
1 safety chain

3 cross members
1 axle

Box 2
1 tow bar
2 side rails

Summary of Contents for 49804

Page 1: ...rating Instructions 11 After Each Use 13 Maintenance 13 Parts Diagram 14 Parts List 14 Replacement Parts 15 Limited Warranty 15 Intended Use The utility trailer kit with its 40 x 48 bed and 1060lb payload capacity is ideal for hauling mulch dirt machinery such as pumps generators lawn mowers or snow blowers or other similar sized cargo The trailer includes fenders to prevent cargo damage from rock...

Page 2: ...ure damaged Tail Lights damaged Side Running Lights loose bolts and nuts structural cracks bends and any other condition that may affect its safe operation Do not use the Trailer even if minor damage appears 2 of 15 Before each use always attach the Safety Chains of the trailer to the towing vehicle Make sure the Safety Chains are attached to the towing vehicle with the equal length at each side D...

Page 3: ...ot fully tighten the nuts yet 4 of 15 STEP 2 Parts Needed 4 Attach the towbar 3 to the front and middle cross members using M10 25 bolts 10 flat washers and M10 nylon nuts noting the bolt direction shown in the figure below 5 Attach the front and rear spring hangers 4 5 noting that the shorter hangers 4 belong toward the front and the longer hangers 5 in the back using M10 25 bolts 10 flat washers...

Page 4: ... perpendicular to the side rails 7 of 14 STEP 3 Parts Needed 6 Put the slipper springs 9 on the spring hangers making sure the spring eyes are forward see figure below Secure the springs with M14 80 bolts 14 flat washers and M14nylon nuts bolt set B noting the bolt direction shown in the figure below 7 Place the axle 10 on top of the slipper springs Place the M10 U bolts down over the axel and on ...

Page 5: ...ping connec tions 25 Connect the wire leads from the side running lights to the brown wire on each side with the wire connectors See connector figures D and E in the diagram Use pliers to squeeze the connector closed 26 Cut the yellow brown and green brown wires to appropriate lengths to go down the side rails to the tail lights and strip the wire ends by 3 4 Push on the wire clips to hold the wir...

Page 6: ...It is important that the trailer coupler press down on the vehicle hitch but not beyond the trailer capacity of 1060 lbs Reduce the weight in the car trunk and rear seat areas by the amount of the hitch force from the trailer It is unsafe and also against the law to carry passengers in any trailer LIGHTING Check lighting before each use and every 100 miles to be sure the stop tail and turn signals...

Page 7: ...ler will increase your braking and stopping distances appreciably DO NOT allow anyone to ride on the trailer Make wide turns when towing a loaded trailer avoiding both sharp turns and U turns Turning too sharply can cause damage to the trailer and or the tow vehicle CAUTION Care must be taken when backing up the trailer only back up the trailer on a straight path The trailer could jackknife if all...

Page 8: ...structions and in a workmanlike manner Obligations of Purchaser You must retain Your product purchase receipt to verify date of purchase and that You are the original purchaser To make a warranty claim contact Us at 1 800 222 5381 identify the product by make and model number and follow the claim instructions that will be provided The product and the purchase receipt must be provided to Us in orde...

Page 9: ...warran ties or incidental or consequential damages so the above limitations may not apply to You This limited warranty is governed by the laws of the State of Minnesota without regard to rules pertaining to conflicts of law The state courts located in Dakota County Minnesota shall have exclusive jurisdiction for any disputes relating to this warranty Distributed by Northern Tool Equipment Co Inc B...

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