Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Instructions would help

As noted by others, this pump has to be properly configured before using and specific steps for this pump need to be adhered to. It is the latter that was the undoing of my tire. It was not made clear you needed to loosen the outer ring of the pump prior to putting it on the valve and that the lever works OPPOSITE to what you expect (meaning you pulling up and away from the hose to engage it). The end result is that from fighting this pump I punctured the tube (I am assuming at the stem to the inner tube).I would not recommend this pump to others until Topeak puts more effort in documentation. It is lame they do not have any instructions online either...