20 Most Recent Hitachi NR65AK Round Head 1-1/2-Inch to 2-1/2-Inch Positive Placement Nailer - Page 3 Questions & Answers

really depends on the model of compressor but if it is an oil less compressor best thing is to junk it and buy a oil lubricated with a cast iron pump dont get one with aluminum if you want a compressor to last you for many years.

Let it drain out then add oil to the compressor.

if its gas need engine info because it could be a couple of issues

This gun should be bump-fired only. Do not place the gun on the work and press trigger. Make sure that the safety spring is in place and has good tension. The spring helps to push the foot off the trigger so that it fires once. You could also adjust the screw that pushes on the firing valve. Turn in or out several turns till head of nail is correct when bump firing then lock the nut. The safety foot fits rather loose on the gun and should still work ok but can get so loose that it falls off the nose. Good luck

what gouge on the nails? and what pressure coming out of the compressor tank , and what type of wood and how thick is it?