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

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

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MAXIMUM TIMING ADVANCE ADJUSTMENT With engine in forward gear, advance throttle arm until specified maximum timing mark is in-line with timing indicator, then adjust screw (a) so it is just touching s