The maker points should be set to 0.020".
The older model mercury outboards, with maker points, should have a 0.020" gap setting.
The 20HP Mercury outboard with serial number 9137627 was made in 1979.
i have a mercury outboard motor the serial# is G034632
The serial number 9137327 for a 20 HP Mercury Outboard is not not listed in the Mercury Marine parts catalog.
whats the serial number
A 9.9 hp Mercury outboard, serial number OB235459 is a 1988 model.
A 35hp Mercury outboard, serial number 6445947, would be a 1984 model.
Two items are needed to determine the age of a Mercury outboard, the serial number and the horsepower rating.
In addition to the serial number, to determine the year model of a Mercury outboard, the horsepower rating is needed.
A 9.9 hp Mercury, serial number OG031959, is a 1995 year model outboard.
Two things are needed to determine the age of a Mercury outboard, the serial number, and the horsepower rating.