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Thank you very much for choosing an Ultra-Tow Product! For future reference, please complete 
the owner’s record below:
      Serial Number/Lot Date Code: _______________     Purchase Date: _______________
Save the receipt, warranty and these instructions. It is important that you read the entire manual 
to become familiar with this product before you begin using it. 

This utility trailer kit is designed for certain applications only. Northern Tool and Equipment 
cannot be responsible for issues arising from modification or use of this product in an applica-
tion for which it was not designed. We strongly recommend that this product not be modified 
and/or used for any application other than that for which it was designed.

For technical questions, please call 

1-800-222-5381.

Table of Contents

Intended Use.......................................................................................................................................1
Technical Specifications....................................................................................................................1
Important Safety Information..............................................................................................................2
Specific Operation Warnings..............................................................................................................2
Assembly Instructions........................................................................................................................3
Before Each Use...............................................................................................................................11
Operating 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 rocks and 
debris, and lights make the trailer street legal. Meets all DOT requirements.

Technical Specifications

 

40" X 48" ALUMINUM UTILITY TRAILER KIT

Owner’s Manual

 40" X 48" ALUMINUM UTILITY TRAILER KIT

Owner’s Manual

 WARNING:

Read carefully and understand all ASSEMBLY AND OPERATION INSTRUCTIONS
before operating. Failure to follow the safety rules and other basic safety 
precautions may result in serious personal injury.

Item# 49804

1 of 15

Property

Tires
Wheel
Bed Dimensions
Ball/Coupler Size
Load Capacity
GAWR
GVWR
Dimensions, Assembled
Shipping Weight

Specifications

4.80-12 Tubeless
4 Bolt Demountable
40 in. x 48 in.
1-7/8 in.
1,060 lbs. max
1,200 lbs. with 4.80-12 Tires at 60 PSI Cold
1,200 lbs.
84in.L x 52-1/2in.W x 22in.H
134 lbs.

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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