Fuel Flow Line Disconnection

Flammable - Keep fire away; Make no fires around the work area, and handle the fuel very carefully. Catching a fire to fuel will cause a serious accident.
Relieve the fuel pressure before disconnecting the fuel line to reduce the risk of fuel spraying from the line.
Disconnect the 12 volt battery negative terminal before the electric connector disconnection to avoid a risk for catching fire which is caused by the sparks coming off the connector.
Clean the contact area of the joint. Any dirt may cause fuel leakage by a misconnection.