Mercury Mariner Outboards 45 Jet 50 55 60 HP Models Service Manual, Page 70Get this manual

Mercury Mariner Outboards 45 Jet 50 55 60 HP Models Service Manual, Page 70

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MAXIMUM TIMING 1 Hold control arm (a) so that maximum spark advance screw (b) is against stopCrank engine with starter motor and adjust maximum spark advance screw to align the specified BTDC timing m

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