Final answer:
Before servicing a pneumatic tool, the first step is to turn it off and disconnect it from its power source for safety reasons. After that, the necessary adjustments, repairs, or maintenance can be performed. Finally, the tool should be tested to ensure it is functioning correctly.
Step-by-step explanation:
Before any adjustments or servicing of a pneumatic tool is performed, the first thing that must be done is to ensure that the tool is turned off and disconnected from its power source. This is important for safety reasons as it prevents any accidental starting or triggering of the tool during the servicing process.
Once the tool is turned off and disconnected, you can proceed with any necessary adjustments, repairs, or maintenance. This may involve cleaning or replacing parts, lubricating moving components, or checking for any leaks or damage.
After the adjustments or servicing is complete, it is important to thoroughly test the pneumatic tool to ensure that it is functioning properly before using it again.