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For technical questions, please call 1-888-866-5797.

Item 66771 

        

SAFET

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Op
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AINTENAN

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Tire care

checking Tire pressure

Note:

 Underinflated tires can decrease handling, 

stopping performance, traction, tire life, and 

load-carrying capability, in addition to causing other 

negative and hazardous effects, including tire failure.  

Overinflated tires are at greater risk of an impact 

break, where the tread and casing break when 

striking a hard edge, often opening a huge gash 

across the tread.  Incorrect inflation pressure 

also increases tires wear rate.  Therefore, it is 

important to keep tires inflated properly.
Check all tires’ pressure at least monthly, 

due to the following factors:

•  Most tires naturally lose air gradually.
•  Tires can suddenly lose air if the tire strikes 

a pothole, curb, or other object.

•  It is usually not possible to determine underinflation 

of radial tires by visual inspection.

This vehicle has 60 PSI recommended cold tire inflation 

pressure.  The term “cold” in this manual does not 

refer to the temperature outside, but it refers to the 

fact that a tire that has not been driven for a period is 

cooler (and therefore has lower pressure) than a tire 

that has been driven on.  Tires heat up while being 

driven on.  To check (or fill to) a tire’s cold inflation, 

the tire must have not been driven for more than a 

mile or two for at least three hours.  If you check a 

tires pressure when it is not “cold”, the pressure will 

appear higher than the actual cold tire inflation.

Steps for Maintaining proper Tire pressure

1.  Locate the recommended tire pressure on the 

vehicle’s tire information placard, certification 

label, or in the owner’s manual.  This Trailer has 

60 PSI recommended cold tire inflation pressure.

2.  Measure and record the tire pressure of all tires.

3.  If the tire pressure is too high in any of the tires 

and the tires have not been driven for at least 

three hours, slowly release air by gently pressing 

on the tire valve stem with the edge of your 

tire gauge until you get to the correct pressure.  

If the vehicle has been driven within the past three 

hours and the tire pressure is too high on any tires, 

then recheck the pressure once the tires have been 

allowed to sit motionless for at least three hours.

4.  If the tire pressure is too low, note the difference 

between the measured tire pressure and the 

correct tire pressure. These “missing” pounds 

of pressure are what you will need to add.

5.  At a service station, add the missing pounds of 

air pressure to each tire that is underinflated.

6.  Check all the tires to make sure they 

have the same air pressure.

7.  If the tires’ pressure was not measured “cold”, 

then the pressure should be rechecked 

with the tires cold as soon as possible.

Tire Size

To maintain safety, only purchase new tires of the same size as the original tires.   

Look at the Tire and Loading Information Placard, the Specifications Chart in this manual, or the sidewall 

of the tire being replaced.  If you have any doubt about selecting the correct size, consult a tire dealer.

Tire Tread

The tire tread provides traction that prevents your vehicle from slipping, especially if the road is wet or icy.   

Tires are unsafe and should be replaced when the tread is worn down to 1/16".  

Measure tread depth using a tread depth indicator (not included).

Tire Rotation

Every 5,000 miles the left and right tires should be switched.   

This will cause the tires to wear more evenly and last longer.

Summary of Contents for 66771

Page 1: ...uctions Save This Manual Keep this manual for the safety warnings and precautions assembly operating inspection maintenance and cleaning procedures Write the product s serial number in the back of the...

Page 2: ...avoid possible injury or death Indicates a hazardous situation which if not avoided will result in death or serious injury Indicates a hazardous situation which if not avoided could result in death or...

Page 3: ...ing safety work shoes is recommended 2 Do not setup or use this Trailer if under the influence of alcohol or drugs Read warning labels on prescriptions to determine if your judgement or reflexes are i...

Page 4: ...nels 11 Make sure you have wheel chocks and jack stands 12 Check trailer for loose bolts and nuts structural cracks and bends and any other condition that may affect its safe operation Do not use the...

Page 5: ...need when backing up have someone outside at the rear of the trailer to guide you whenever possible 4 Use slight movements of the steering wheel to adjust direction Exaggerated movements will cause g...

Page 6: ...ies when servicing use only identical replacement parts Only use accessories intended for use with this Trailer Approved accessories are available from Harbor Freight Tools 3 Maintain this Trailer wit...

Page 7: ...Place the Trailer Body 1 upside down as shown in Figure A Body 1 Figure A 2 Use the Bolts 25 and Lock Nuts 33 to fasten the Leaf Springs 2 onto the sides of the Trailer Body WARNING Mount the Leaf Sp...

Page 8: ...ers and away from the Tires 10 Use Bolt 27 and Lock Nut 34 to mount the Coupler 7 to the front of the Drawbar 11 Use Bolts 26 Nuts 34 Rubber Pads 39 and Washers 29 to fasten Body Bracket 19 to Bottom...

Page 9: ...ly causing property damage SERIOUS PERSONAL INJURY AND OR DEATH 4 Make sure the Safety Chains are secured safely to the Trailer and the tow vehicle Do not allow the Safety Chains to touch the ground w...

Page 10: ...needs to be pressed back while the Nut is tightened After Nut is tightened the retaining plate needs to fit in place against the flats of the Nut to prevent it from moving This adjustment should be d...

Page 11: ...ed to carry Maximum Loaded Vehicle Weight means the sum of a Curb weight b Accessory weight c Vehicle capacity weight and d Production options weight Maximum Tire Width means the greater of either the...

Page 12: ...s 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 Load Index This is a measurement of how much wei...

Page 13: ...MPH N 87 P 94 Q 100 R 106 S 112 T 118 Code MPH U 124 H 130 V 149 Z 149 W 168 Y 186 Table B Tire Speed Rating Codes Note You may not find this information on all tires because it is not required by la...

Page 14: ...acard certification label or in the owner s manual This Trailer has 60 PSI recommended cold tire inflation pressure 2 Measure and record the tire pressure of all tires 3 If the tire pressure is too hi...

Page 15: ...and Load Limit Tire and Loading Information Placard The weight of cargo should never exceed 271 kg or 600 lb TIRE SIZE COLD TIRE PRESSURE SEE OWNER S MANUAL FOR ADDITIONAL INFORMATION FRONT 4 80 4 00...

Page 16: ...TO 3 000 MILES OF USE lubricate the Hub Assemblies with a heavy weight bearing grease following the instructions in Hub Bearing Maintenance on page 16 2 After each Hub Assembly is reassembled tighten...

Page 17: ...lights off then clean the surface deposits in the connector holes Try to clean off only the deposits and lubricate lightly with dielectric light waterproof grease Maintenance Chart The following Char...

Page 18: ...o serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts 7 8 6 27 34 37 3 3...

Page 19: ...nical questions please call 1 888 866 5797 Item 66771 Safety Operation Maintenance Setup 14 21 17 16 15 20 18 19 32 30 28 32 35 30 32 Please note Rubber Pads 29 not shown 23 32 30 24 29 34 39 Assembly...

Page 20: ...ree from defects in materials and workmanship for the period of 90 days from the date of purchase This warranty does not apply to damage due directly or indirectly to misuse abuse negligence or accide...

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