Safety filters serve two purposes: they act as a backup to the primary filter and help protect the engine while the primary filter is being serviced.
• They serve as a backup filter in the event of primary filter damage or improper installation.
• They help prevent contaminants from entering the clean side of the air intake system during primary filter servicing.
• They are designed to plug quickly if contamination passes the primary filter, alerting operators to a problem.
• It is recommended to replace safety filters with every third primary filter change unless the primary filter has failed.
