What factor is crucial for operating pneumatic tools safely?

Manufacturer specifications are crucial for operating pneumatic tools safely because they provide detailed information on the operating pressure, maintenance requirements, and safety guidelines specific to each tool. These specifications ensure that the tool is used within its designed limits, which helps prevent malfunctions and accidents. Understanding the manufacturer's guidelines also aids operators in identifying the appropriate safety equipment, such as personal protective gear, which is essential for safe operation. Adhering to these specifications minimizes risks associated with misuse or improper maintenance, ultimately contributing to a safer working environment.