If its your first time using it, make sure the bolt is pulled back before pumping it. Pulling back the bolt resets the sear and drops the valve. If its well used, either your pump head o-ring or valve has gone bad.
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If its your first time using it, make sure the bolt is pulled back before pumping it. Pulling back the bolt resets the sear and drops the valve.
If its well used, either your pump head o-ring or valve has gone bad.