NONRETURN VALVE INSPECTION [MZR-CD (RF Turbo)]

1. Remove the nonreturn valve. (See FUEL TANK REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)

2. Verify that the nonreturn valve opens up to 90 degrees when it is pushed from the fuel-filler pipe side, and it returns to the normal position by the spring force.

• If the nonreturn valve does not open up to 90 degrees or does not return to the normal position, replace the nonreturn valve.