1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 33Get this manual
1 Fuel joint and fuel hoses After cleaning the fuel joint, push the valve pin and blow the fuel joint with compressed air from the fuel hose sideI fuel hoses are cracked or aged, they should be replacedFuel filter Clean the filter of dust and impurities with suitable cleaning solvent, and blow it out with compresssd air
2Fuel filter
Remove the nut, and remove the fuel filter
Installation