Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 53Get this manual

Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 53

Table of Contents Page Page

Fuel System Troubleshooting 3-1 Carburetor Adjustments 3-2 Initial Starting Adjustment 3-2 Low Speed Mixture Adjustment 3-2 Carburetor Float Adjustment 3-2 Float Lever Adjustment 3-2 Float Drop Adjustment 3-2 Float Spring Adjustment 3-2 Main High Speed Jet Adjustment 3-3 Vent Jet 3-3 Rejetting Carburetors for High Altitude Operation 3-3 Idle Speed Adjustment 3-4 Fuel Pump 3-5 General Information 3-5 Fuel Pump DescriptionOperation 3-5 Checking for Restricted Fuel Flow Caused by Anti-Siphon Valves 3-5 Testing 3-5 Troubleshooting Fuel Pump 3-5 Fuel Pump (Triangle Type) and Fuel Filter 3-6 Fuel Pump Disassembly and Reassembly 3-7 Fuel Pump Installed 3-7 Fuel Pump Components 3-7 Fuel Pump with Two Black Colored Check Valves 3-7

Fuel Pump with One Red Colored and One White Colored Check Valve 3-7 Fuel Pump with One Red Colored Check Valve, One White Colored Check Valve and Filler Block 3-7 Cleaning and Inspection 3-7 Check Valve Installation 3-7 Fuel Pump with Two Black Colored Check Valves 3-7 Fuel Pump with One Red Colored Check Valve and One Black Colored Check Valve 3-8 Fuel Pump with One Red Colored Check Valve, One White Colored Check Valve and Filler Block 3-8 Fuel Pump Installation 3-9 Fuel Pump (Square Type) and Fuel Filter 3-10 Fuel Pump Disassembly and Reassembly 3-11 Fuel Pump Installed 3-11 Fuel Pump Components 3-11 Cleaning and Inspection 3-12 Check Valve Reassembly 3-12 Carburetor Assembly 3-13 Carburetor Disassembly 3-14 Carburetor Cleaning and Inspection 3-15 Carburetor Reassembly 3-15 Float Lever Adjustment3-16 Float Drop Adjustment 3-16