Fillpipe Restrictor: Description and Operation

- The restricted opening of the fuel tank filler pipe allows only a non-leaded fuel nozzle to be inserted. The restrictor consists of a narrow opening in the fuel tank filler pipe covered by a spring loaded steel trap door. Leaded fuel nozzles will not fit through the narrow opening.
- Restricted fuel tank filler pipes are manufactured as an assembly, and must be serviced by removal and replacement with a new fuel tank filler pipe and a new fuel filler grommet.
- Fuel tank filler pipes are not to be modified in any way.