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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 4'x 8’aluminum folding trailer 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 application 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 ...........................................................................................................................................15
Replacement Parts ..........................................................................................................................16
Limited Warranty...............................................................................................................................16

Intended Use

The road-ready folding aluminum trailer kit features: a 4ft. x 8ft. bed, a rustproof aluminum 
frame that folds to 72-5/8inches long for storage, and a 1,170 lb. payload capacity and includes 
fenders to prevent cargo damage from rocks and debris, and lights to make the trailer street 
legal. Meets all DOT requirements.

Technical Specifications

 

4' x 8'FOLDING ALUMINUM TRAILER KIT

Owner’s Manual

 4' x 8'FOLDING ALUMINUM 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# 49803

1 of 16

Property

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

Specifications

4.80-12 Tubeless
4 Bolt Demountable
4 ft. x 8 ft.
144"L x 62-1/2"W x 22-1/2"H
1-7/8 Inch
Class I; 2000 Lbs. Maximum Gross Load
1170 Lbs.
1400 Lbs. with 4.80-12 Tires at 60 PSI Cold
1400 Lbs.
195 lbs.

Summary of Contents for 49803

Page 1: ...perating Instructions 11 After Each Use 13 Maintenance 13 Parts Diagram 14 Parts List 15 Replacement Parts 16 Limited Warranty 16 Intended Use The road ready folding aluminum trailer kit features a 4ft x 8ft bed a rustproof aluminum frame that folds to 72 5 8inches long for storage and a 1 170 lb payload capacity and includes fenders to prevent cargo damage from rocks and debris and lights to make...

Page 2: ... 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 2 of 16 Before each use always attach the Safety Chains of the trailer to the towing vehicle...

Page 3: ...f 16 4 Attach the L shape tow bar plates 5 in bolt bag 2 Ⅱ to right and left front side rails as shown below with M10 25 bolts 10 flat washers and M10 nuts A B C in bolt bag set 1 5 Attach the tow bar brackets 8R 8L in bolt bag 2 on the front cross member as shown below with M10 25 bolts 10 flat washers and M10 nuts A B C in bolt bag set 1 6 Arrange the tow bars 9 as shown below and attach the fla...

Page 4: ...le nuts 34 Tighten them snugly then back off castle nuts a little bit so that hubs can spin freely 21 Grease both grease fittings 30 located on the backside of each hub assembly 22 Insert cotter pins 28 through the holes at the end of axle spindles and bend pins over to lock them in place Gently tap the dust caps 35 over the hub openings until flange of the cap seats is on the hubs 23 Secure each ...

Page 5: ...h M10 25 bolts 10 flat washers and M10 nuts A B C in bolt bag set 1 as shown below Install the left tail light 24L and license plate holder 23 with clear lens facing down with M6 padded nuts G on the light 29 Remove the right tail light 24R from the right tail light bracket 22R attach bracket to right side rail with M10 25 bolts 10 flat washers and M10 nuts A B C in bolt bag set 1 also as shown be...

Page 6: ...epartment of Motor Vehicles Before Each Use Check for loose damaged or cracked parts on the trailer before each use Carefully check that the trailer will operate properly and perform its intended function including the tire condition and pressure and correct function of the tail and side lights see Operating Instructions below Replace damaged or worn parts immediately Never use the trailer even if...

Page 7: ...empt to fold up the trailer without the help of one or two able assistants COUPLER OPERATION 1 Temporarily remove the R pin and safety pin Then pull up on the trigger and lift up on the handle NOTE To reduce friction between the hitch ball and coupler apply a layer of heavy weight grease over the hitch ball 2 With assistance place the trailer coupler over the vehicle s hitch ball and pull back on ...

Page 8: ...30mm R pin 1 7 8 coupler safety chain left spring hanger right spring hanger left caster bracket right caster bracket caster fender fender bracket left tail light bracket right rail light bracket license plate holder Q ty 4 6 1 1 8 2 2 2 1 1 2 1 1 1 2 2 1 1 1 1 1 1 4 2 2 1 1 1 Part No 24L 24R 25 26 27 28 29 30 31 32 33 34 35 36 37 A B C D F G H I J K N O Description left tail light right tail ligh...

Page 9: ...with this limited warranty Your sole and exclusive remedy is that We will at our sole option and within a commercially reasonable time either replace the product or product component without charge to You or refund the purchase price less shipping This limited warranty is not transferable Limitations on the Warranty This limited warranty does not cover a normal wear and tear b damage through abuse...

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