Thank you so much!! I can't wait to assemble and put a trailer on mine!!

assembling mine tomorrow - thanks for the tips -- I took notes as you went through steps -

I've done a smaller version of this trailer. The cone surfaces of the axle are often contaminated with welding swarf (?) That must be cleaned off. Also the grease already in the hubs is notoriously bad so I cleaned that out and put top quality grease in. These little trailers need all the help they can get. Run ground wires - don't depend on chassis ground. Solder all connections.

Good video ,Overall IMO for the money this Trailer seems like the better of the deals on the small Utility Trailers available as a kit to Be Assembled a Cousin of mine who is a Engineer bought a Harbor Freight one he assembled in his garage in the evenings and he told me that not one set of predrilled holes aligned on the entire thing it was a Steel Trailer that he reemed out every hole with a Die Grinder he is happy with the built product but i personally think the all Aluminum NorthernTool one is a better deal and Engineered nicer thanks for your tips

Hi all, I just finished the base trailer on this build (no deck or sides yet.) I wanted to do a quick debrief while things are still fresh in my mind. First off, you are starting your build with the trailer upside down. Consequently when you put on the arms with the serial number and VIN on them, make sure you put them on so they are upside down and you can’t read them. When you are laying out your frame rails, at least on mine, there are only two holes in the rails that have mount holes drilled for the running lights by them. Locate these two rails and make sure they are on opposite sides with the running light holes toward the front of the trailer. In my case I discovered this after I had the frame assembled and just went ahead and drilled the holes for the one I missed rather than disassemble. When mounting the hinge, the two bolts closest to the hinge bolt itself interfere with the frame bolts. After loosening the frame bolts for access, I inserted the inner hinge bolts so that the bolt head is inside the frame and the shank protrudes outwards and no longer interferes. I also put the actual hinge point bolt in the same orientation with the thinking I that it’s bolt head was less likely to interfere with a load than the bolt shank would. Regarding the wiring, the first thing I did was to determine the quality of the trailer frame as a ground path. I took my ohmmeter and measured 0.1 ohms from the front of the trailer to the rear. Consequently I put ring terminals and heat shrink on all of the white ground wires and used self-drilling sheet metal screws to mount all of the white ground wires up to the frame rails. I used just a plain old 9v battery (like us oldsters used for transistor radios) and a couple short pieces of electrical wire to test the lights paying close attention to polarity. The plain post is positive and would go to your brown, green, and yellow pins in the connector and the springy slotted connector on the 9v battery would go to the white ground wire. I tested the lights while the back was folded forward so I could see the lights from the front. Thanks to everyone else who posted tips! It was all very helpful. Good luck to everyone on their assemblies! Oh yeah, one thing I did was to clamp a framing square to the inside of the frame as I snugged up the frame bolts so I could make sure it was as close to square as possible as I assembled. I ignored their advice to leave the bolts loose. I did have to remove or loosen a few back up along the way, but I found it helpful to have it square and snug early on.

That's great it's not going to rust it's the exact same trailer from harbor freight just in aluminum and I love the color much better than the red from harbor freight that eventually turns pink in the Sun

Hey great video! Is the hardware stainless steel? Thanks

I hear them lock nuts breaking loose at certain points, which I'll add an additional with red thread locker or something.

If you don’t need to fold it, put bolts through the frame to stiffen it up.

Where did you buy that trailer? And I must say you created a great video and I would say that you must be a teacher. You did a great job like a teacher. 👍👍👏👏👏👏

About to pull the trigger on a 4x8 to haul a couple dirt bikes, and wonder what your thoughts are between the one you chose, and the harbor freight steel utility trailers?

Nice vid. Was close to buying a harbor freight but I need lightweight. Couple questions; does anyone know if you need nylon washers in between disparate metals and did they provide them. Also, for spare tire- harbor freight ok or buy from trailer shop?

Do you must disassemble the deck wood to fold the trailer with the 3/8 ?? Thanks!

check out 13.05 to 13.15 that's one of the most important parts to understand in ENTIRE video and as you do your assembly - you do a great job showing a close up but a graphic or verbal comment would have been helpful , I had to watch 3 times before i noticed the change you made -- when the hinge plates are installed the instructions say nothing about how to install the bolts - fact is, the one bolt will NOT go in with the head as inserted everywhere else on trailer and as Urban Monk initially shows here because that one bolt hits a nut on the back inside of the corner beams - in fact the video shows moments later that bolt reversed by Urban Monk and put in from the rear inside corner but to do so the obstructing not and bolt on the inside rear corner has to first be removed -- its subtle - but other wise the hinge plates cannot be attached

Great video! Question. When in folded position how tall is the trailer top to bottom? Thanks again!!!

I want to know the names of the smallest and lightest weight trailers and where can I get them from ? I want a 3.5 open trailer ?

How did you flip the trailer over after the upside-down assembly????

Are you comfortable on the freeway? Perhaps traveling with this? Relatively light load. Is the speed rating of tires and axel an issue?

0 seconds ago Was hoping you might confirm the folded outside fender to fender measurements of the trailer. It is the small storage area required by these trailers that make them an attractive purchase. My condo storage unit is exactly 63 inches wide. If the assembled trailer varies even by half an inch it will not be satisfactory for my requirements. Can you advise of the width of the Northern Tool Ultra Light 4x8 Folding Trailer when folded for storage???

Manual says only 45mph. Did you do anything different to go faster? I would like to tow at 55mph.

Thanks for the video. Can you make a video showing how you fold it up? Do you need to remove bolts to make it happen?

Regarding the castor with narrow wrench space...any old school motorcycle guy has old tool kits with skinny wrenches! If not? C'mon grind one narrow from a garage sale!

Had the exact problem with the castors from the harbor freight folding trailer super duty i bought..I called the customer service they told me i had to find a thinset 🔧 wrench set ..I found a set($20) from amazon..what a bother! You are right..they should of included a stamped thin 🔧 wrench with the kit..I am starting to wire and some videos show putting a a wire from the where the tongue and the box frame to keep continuity to the ground cause it loses ground at that point...have you had any ground issues since you had it?

The black brackets that support the wheel and axle don’t allow the trailer to fold because the screws are attached to both halves of the trailer. Can’t figure this one out? Any suggestions??

I bought this trailer and am assembling it....at about 10:12 you are installing the spring supports. Dumb question but how does the trailer fold after installing these? It seems that these lock the front and rear halves together.

Good presentation. I understand this trailer comes in 3 boxes, how heavy are these boxes? Is $85 liftgate service really necessary?

I almost bought a maverick hybrid but I don't really need a truck. Mayne only once or twice a year to go to home depot and do diy home projects. Should I buy a foldable utility trailer instead and add a hitch to my Nissan leaf so I can haul stuff whenever I need it?? How heavy is it and is it easy to fold and unfold? Can i store it outside in yard if i dont have space in garage?

Questions: Since you had calipers, what were the three dimensions of the structural aluminum? And to confirm, it appears to be Aluminum Association (AA, uniform thickness of flange) rather than American Standard (AS, flange thinner toward edge)? You also neglected to mention that the more rounded side of the washer goes on the fastener side, and the washer goes on the side of the fastener which is rotated when tightening. Also when the fastener is much harder than the structure material, both ends of the fastener should have washers for greater distribution of compressive force. (Decking is not a washer, and all fasteners connecting structual aluminum must be metal-to-metal. Counterbore spacer holes with a spur, spade, or auger drill bit.)

Ignore the brake light, turn signal, marker lights instructions LOL

Do you have a link to purchase the trailer?

Thank you Urban Monk. I can assemble mine with more confidence now. Question - at 8:44 the unit is upside down but the stake sockets are mounted with the 'stop-tab' down. Did you flip those stake sockets around off-camera, or am i mistaken? I was just a bit confused. Thank you so much!

Those are bolts in the center of the spring they're called tie bolts. a rivet. Tie rivet. I haven't seen. i'm sure, If they are they're using them to try to Make more profit.

Need your help! Please tell me how to connect the tail light wires. On left side, there are 3 wires: yellow, brown and white. On right side, green, brown and white. I don’t know how to make the connection.

did you use it with your motorcycle and how did you like it

10:30.. Is that me or you mounted the tongue side up and after 16:59, you fixed it.. ;-)

Thank you so much for taking the time, how's been your trailer? I'm about to get the 5x8 for towing with a prius when needed.

Has anyone put Bearing Buddies on this trailer if so what size?

Several errors I've seen myself. The leaf springer "Hanger" states to Bolt (2) Bolts to the "Front Trailer 1/2" ( including using a bolt from the top assembly of the frame itself.) Would have been nice to omit this bolt in step 1 instead of taking it out... just to replace it ...after installing the hanger??? And it also States to install (2) More bolts into the Rear 1/2 Of the trailer frame. Now in thinking about this....I thought...if it's bolted into the front 1/2 of a " Folding deck". Plus,,, the same piece of "Solid Steel" is also bolted in to the Rear 1/2 of the " Folding Deck" how is the deck going to fold?. This step would only be use if one is NOT PLANNING ON FOLDING THIS? Again resulting in removal of work done.. Thanks for doing this, the directions in the instructions were not good. Your vid helps tons.

My trailer will not fold... I’m not sure what part I did wrong... sucks... though I followed you pretty close... any tips? What shall I do??

Did you say you used 3/16” plywood?

I suggest you lubricate the folding hinges.

At what point did you figure out you had the trailer tongue on wrong. 16:36-1700 shows it on top. Then after that it shows it on the bottom.

What material is the deck?

How many screws do you need to unscrew to fold it?

Where can I order this?

What size nut is the axle nut?

The Northern Tool assembly manual is horrible and they have no support for this trailer. I was stuck for a while trying to figure things out and they couldn't answer my questions and didn't call me back. If one of their staff would actually assemble this trailer using their instructions they would see the shortcomings and fix the manual. I was also missing one M10 bolt and a few other things and had to run out to a hardware store, The folding of the trailer got me too but they told me to follow the manual, then didn't answer me when I told them the manual has NO instructions for folding the trailer. It would have been easier if they had some type of quick release instead of having to take out bolts. Also my manual is apparently not as detailed as yours and doesn't show an actual inventory of all the hardware. The instructions reference "bolt bag #2" for instance but the bags are not marked. It's pretty outrageous. I am not happy that it took me three days to get this thing put together and much of that time was spent sitting around scratching my head trying to figure out how to assemble certain parts. In some cases the instructions are just plain wrong and had me assemble parts in the "wrong" order forcing me to disassemble what I had already assembled and re-do it. Your video helped me tremendously. While you missed one or two things I needed to see, you solved my main issues by at least letting me see what certain assemblies looked like when together. The hinges gave me fits but after your video I was good to go. You provide a lot of valuable information and finding your video saved me on this project, especially since Northern Tool is useless. Thank you!

At what point did you realize you had put the "tongue assembly" on the wrong way?

You no You had the Drawbar upside down.

just put now put one together. Lots of work arounds and redos beacuse directions are lacking big time. Do not buy this model if you really done need a folding trailer. Their are many better options for non folders.