Clymer Shop Manuals CLYMER MANUAL, MERCURY 3.9-135 HP OB 64-1971 - CB719

This Clymer DIY repair manual covers 1964-1971 Mercury 3.9-135 HP, 1-cylinder to 6-cylinder outboard motors.TABLE of CONTENTS:General informationTools and techniquesTroubleshootingLubrication, maintenance and tune-upEngine synchronization and linkage adjustmentsFuel systemIgnition and electrical systemsPower headLower unitAutomatic rewind startersMerc Thruster electric outboardsWiring diagrams