Mariner 75 - Fuel System and Carburetion

90-13645--2 495
Table Of Contents
Page Page
Fuel Pumps 3A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information 3A-1. . . . . . . . . . . . . . . . . . .
Fuel Pump Description/Operation 3A-1. . . .
Checking For Restricted Fuel Flow
Caused By Anti-siphon Valves 3A-1. . .
Testing 3A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Fuel Pump 3A-1. . . . . . . . . . . .
Fuel Pump Components (Design 1) 3A-2. . . . .
Fuel Pump Removal/Installation
(Design 1) 3A-3. . . . . . . . . . . . . . . . . . . . . . . .
Fuel Pump Cleaning, Inspection,
Disassembly and Reassembly
(Design 1 and 2) 3A-3. . . . . . . . . . . . . . . . . . . . . .
Fuel Pump – Cleaning/Inspection 3A-3. . . . . . .
Check Valve Reassembly 3A-4. . . . . . . . . . . . . .
Carburetion 3A-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel System Troubleshooting 3A-12. . . . . . . . . . .
Checking for Restricted Fuel Flow
Caused by Anti-Siphon Valves 3A-13. . . . . . .
Fuel System (Carburetor) 3A-14. . . . . . . . . . . . . . . . .
Fuel System (Linkage) 3A-16. . . . . . . . . . . . . . . . .
Carburetor Adjustments 3A-17. . . . . . . . . . . . . . . .
Initial Starting Adjustment 3A-17. . . . . . . . . . .
Low Speed Mixture Adjustment 3A-17. . . . . .
Carburetor Float Adjustment 3A-17. . . . . . . .
Specification Sheet - WME Carburetors 3A-18. . . . .
Carburetor Fastener Torques: 3A-18. . . . . . .
Settings 3A-18. . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Pump Specifications 3A-18. . . . . . . . . . .
Fuel Pump Pressure 3A-18. . . . . . . . . . . . . . .
Sealants 3A-18. . . . . . . . . . . . . . . . . . . . . . . . . .
Idle Speed Adjustment 3A-19. . . . . . . . . . . . .
Main (High Speed) Jet Adjustment 3A-19. . .
Rejetting Carburetors For High
Altitude Operation 3A-19. . . . . . . . . . . . . .
Jet Orifice Size/Part Number Chart 3A-20. . .
Carburetor Removal and
Disassembly 3A-20. . . . . . . . . . . . . . . . . . .
Carburetor Disassembly 3A-21. . . . . . . . . . . . . . .
Cleaning and Inspection 3A-22. . . . . . . . . . . .
Carburetor Reassembly 3A-22. . . . . . . . . . . . . . . .
Idle Air Screw 3A-23. . . . . . . . . . . . . . . . . . . . .
Enrichener System 3A-24. . . . . . . . . . . . . . . . . . . . . . .
Description for Three Cylinder Engines 3A-24. .
Enrichener Valve Hose Installation - Three
Cylinder Engines 3A-24. . . . . . . . . . . . . . . . . .
Description for Four Cylinder Engines 3A-24. . .
Enrichener Valve Hose Installation - Four
Cylinder Engines 3A-24. . . . . . . . . . . . . . . . . .
Enrichener Valve Test 3A-25. . . . . . . . . . . . . .
Acceleration Pump Circuit Operation -
Four Cylinder Engines 3A-26. . . . . . . . . . . . . .
Accelerator Pump Fuel Flow Circuit 3A-26. .
Acceleration Pump Fuel Flow Circuit for
Four Cylinder Engines 3A-27. . . . . . . . . . . . . .
Fuel Tank 3A-28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 3A-28. . . . . . . . . . . . . . . . . . . . . .
Fuel Tank Components 3A-28. . . . . . . . . . . . . . . .
Fuel Line and Primer Bulb Assembly 3A-29. . . .
Maintenance 3A-30. . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Line Clamp Removal and
Installation 3A-30. . . . . . . . . . . . . . . . . . . . .