*DO NOT use on diesel engine.*Wear a pair of OSHA approved safety glasses.*Release gas cap and relieve fuel pump pressure.*Tighten all connectors before test. Any oil lease is NOT allowable.*Far away fires and the lighting equipment must be anti-break.*After test, remove residual fuel from all hoses and RELEASE FUEL SYSTEM PRESSURE, and thendisconnect adapters or tester.*Dry leak oil and throw the rag into free fire containers.