1. Ensure red safety lock is on (pushed up)
2Unscrew body and insert 16g co2 Cartridge with narrow end facing up
3. Carefully screw the body into the head, ensuring that the cartridge is properly punctured
NOTE: Completely screw the unit to prevent leaking gas
4. Push the red safety catch down
5. Place the end of hose with black nozzle at the desired location 6. Press the trigger to discharge the co2 to clear the clogged area