1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 155Get this manual
Fuel System Troubleshooting General Information
Problems that are thought to be caused by the fuel system may, in reality, be something completely differentItems, that are shown in the list on the right, could give the impression that there is problem in the fuel system
1Propeller 2Spark Plugs 3Ignition Timing 4Ignition Spark Voltage 5Cylinder Compression 6Reed Valves
Typical symptoms and solutions in troubleshooting fuel system are shown below: