Frequency Valve: Service and Repair

Avoid contact between rubber valve retainer and gasoline as rubber will swell if allowed to come in contact with gasoline.
1. Disconnect electrical connection.
2. Disconnect small bore line to valve. Grip hex nut closest to hose and remove valve nut.
3. Disconnect modulating valve return line from warm-up regulator and fuel distributor, and disconnect joint in line from distributor.
4. Remove and disconnect valve and return lines.
5. Reverse procedure to install.