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TRAILER FOLDABLE - WITH 12” WHEELS MODEL 90154 ASSEMBLY AND OPERATING INSTRUCTIONS Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual product may differ slightly from the product described herein. Distributed exclusively by Harbor Freight Tools ®...
If wearing a long-sleeve shirt, roll sleeves up above elbows. Wearing safety work shoes is recommended. Do not overreach. Keep proper footing and balance at all times to prevent tripping, falling, back injury, etc. REV 06k; 09b SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 3...
TRAILER TO THE TOWING VEHICLE. Make sure the Safety Chain is attached to the towing vehicle with the equal length at each side. Do not allow the Safety Chain to drag on the ground. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 4...
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Motor Vehicles for information and guidance on registering, licensing, and titling the Trailer. MAINTAIN LABELS AND NAMEPLATES ON THE TRAILER. These carry im- portant information. If unreadable or missing, contact Harbor Freight Tools for a replacement. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 5...
Attach the Left Connecting Rail (3L) and the Right Connecting Rail (3R) to the Front Left Side Rail (1FL) and Front Right Side Rail (1FR), using the 9/16” Bolts (E), 9/16” Hex Nuts (I), and 1/8” Cotter Pins (P). SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 6...
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(25). Assemble the parts, using the 3/8” x 3/4” Bolts (A), 3/8” Nylon Nuts (G) and also the 3/8” x 1” Bolts (B) and 3/8” Nylon Nuts (G). (See Figure C.) SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 7...
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Left Side Rail (1FL), using 3/8” x 1” Bolts (B) and 3/8” Nylon Nuts (G). Attach the Spring Hanger (12R) to the Front Right Side Rail (1FR), using 3/8” x 1” Bolts (B) and 3/8” Nylon Nuts (G). (See Figure E.) SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 8...
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Plates. The Spring Plates may need to be adjusted slightly to allow the holes to line up. Then secure the Axle and Spring assemblies, using 3/8” Spring Washers REV 06b SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 9...
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Make sure that your hands are thoroughly clean and the bearing packer (not included) is also thoroughly clean. Place fresh, clean bearing grease in the packer. With the grease-filled bearing packer in one hand and the bearing in the other, REV 04g SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 10...
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Attach two Stake Clamps (25) to the Front Cross Member (2A), using M10x20 Bolts (A) and M10 Nylon Nuts (G). Then, repeat this Step for the remaining two Stake Clamps and the Rear Cross Member (2B). (See Figure H.) SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 11...
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To install the Wiring Harness on the Trailer, use a Self Tapping Screw (R) to attach the White Ground Wire located at the Plug end of the Wiring Harness to the small SKU 90154 For technical questions, please call 1-800-444-3353.
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It is recommended that only a qualified technician perform the electrical service that may be needed to enable your particular make/model vehicle to power the Trailer’s 12 volt DC lighting system. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 13...
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NOTE: To avoid damage to Casters (13), avoid rolling the Trailer on its Casters over long distances. The Casters should only be rolled over a flat, level and hard surface. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 14...
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(See Figure K.) Use the 3/8” Cross Head Bolts, 3/8” Flat Washers, 3/8” Spring Washers, and 3/8” Hex Nuts to secure the Plywood bed to the Trailer frame. (See Figure K.) SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 15...
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Cut the Stakes, Front End Rails, Back End Rails, and Side rails to the sizes indicated in the illustration and drill 3/8” diameter mounting holes where shown. (See Figure L.) SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 16...
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3/8” x 1-3/4” Cross Head Bolts and 3/8” Nuts. (See Figure M.) NOTE: For quick folding purposes, you may not want to bolt down the Stakes permanently to the Stake Clamps (25) of the Trailer. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 17...
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Safety Pin and “R” Pin. (See Figure N.) Make sure to attach each side of the Safety Chain (8) equally to the towing vehicle’s rear bumper or frame. (See Figure N.) REV 05f SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 18...
• Tread means - that portion of the tire that comes in contact with the road. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 19...
This information is used to contact consumers if a tire defect requires a recall. • Maximum Load Rating - This number indicates the maximum load in kilograms and pounds that can be carried by the tire. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 20...
See the Tire Care section starting on the following page for an explanation of tire pressure and see the Vehicle Load Limit following that for an explanation of load limit. REV 09b, 09g SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 21...
These “missing” pounds of pressure are what you will need to add. At a service station, add the missing pounds of air pressure to each tire that is underinflated. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 22...
Tires should be removed from the rim to be inspected before being plugged and patched. A qualified mechanic should remove the tire from the rim, perform the repair, and remount the tire. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 23...
Casters; if the Casters become damaged or deformed, immediately stop the Trailer movement. The folded up Trailer should only be transported short distances. TO CLEAN, use only water and a mild detergent. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 24...
Wiring Diagram Note: Some trailer tail lights will have two leads instead of three. They connect to the harness leads the same way; brown to brown, color to color. REV 06e SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 25...
ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO. REV 05h; 06f; 06k, 08h SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 26...
Read and adhere to the following instructions; failure to read and obey all of the following instructions COMPLETELY will void the warranty and can result in damage to the trailer, property damage, or SERIOUS PERSONAL INJURY. SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 27...
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This warranty gives you specific legal rights and you may also have other rights which vary from state to state. 3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353 SKU 90154 For technical questions, please call 1-800-444-3353. PAGE 28...
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