6.5.9 Lower Tire Jack and remove from under Trailer.WARNINGNever crawl under a trailer on jacks. The trailer could slip offthe jack or the jack could fail resulting in serious injury or death.WARNINGLug nuts are prone to loosen after initial installation, which canlead to death or serious injury.Check lug nuts for tightness on a new trailer or when wheel(s)have been remounted after the first 10, 25 and 50 miles of driv-ing and after any impact.Lug nuts for the tires must be tightened by the user before eachuse. Sears cannot be held responsible for damages caused byloosened lug nuts.WARNINGTo help ensure long tread life and your safety. Always checktire pressure to ensure optimum life and performance from yourtires. The tires that came with your trailer should have a tirepressure of 80 psi. Sears cannot be held responsible for dam-ages caused by uneven tread wear and blow outs from an under-inflated or over-inflated tire.”6.6 Checking the Tire PressureAlways check the tire pressure before each tow. Use a pressure gauge to ensureproper tire pressure. The tires provided with your Trailer should be filled to 80 psi.Tire pressure must be checked when the tire is cold. If the trailer has been towedfor at least one mile, allow at least three hours after a tow for the tire to cool beforechecking the pressure.