Direct sales from the factory: 1, when inflated with heavy vehicles, the tires should be supported and suspended before inflated. 2, continuous use will cause the upper part of the air pump to heat up, which is a normal phenomenon and does not affect the use effect. 3, the general limit of use is within 0.8MPa (8 psi). 4, when using, if you feel the pull is heavy, please remove the screw of the outer cylinder, and then pull the handle up to separate the outer cylinder from the inner cylinder, clear the accumulation around the piston, and then apply a layer of high-quality lubricating grease (commonly known as grease), after assembly, the air pump can be restored to light and free.
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