Draining the gas pipe (CNG): Notes
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
The battery negative terminal must be disconnected during all work carried out on gas installations. See Battery, disconnecting .
Also see Safety precautions .