Nail 
Make sure no one is nearby before nailing. Never attempt to nail from both the inside and outside at the same time. Nails may rip through and /or fly off, presenting a grave danger.
Watch your footing and maintain your balance with the tool. Make sure there is no one below when working in high loca- tions, and secure the air hose to prevent danger if there is sudden jerking or catching.
On rooftops and other high locations, nail as you move for- ward. It is easy to lose your footing if you nail while inching backward. When nailing against perpendicular surface, nail from the top to the bottom. You can perform nailing opera- tions with less fatigue by doing so.
A nail will be bent or the tool can become jammed if you mis- takenly nail on top of another nail or strike a knot in the wood. The nail may be thrown and hit someone, or the tool itself can react dangerously. Place the nails with care.
Do not leave the loaded tool or the air compressor under pressure for a long time out in the sun. Be sure that dust, sand, chips and foreign matter will not enter the tool in the place where you leave it setting.
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