U.S.A. And CANADA
- Remove the check valve. (See FUEL TANK REMOVAL/INSTALLATION .)
- Verify that there is airflow when positive pressure is applied to port A.
- If there is no airflow, replace the breather pipe. (See FUEL TANK REMOVAL/INSTALLATION .)
- Verify that there is airflow when negative pressure is applied to port A.
- If there is no airflow, replace the breather pipe. (See FUEL TANK REMOVAL/INSTALLATION .)