The dry weight of a 1983 model, 40hp Mercury outboard, is 156lbs.
The dry weight of a 1992 40hp Johnson is between 180 and 190lbs. depending on the model.
A 40 hp Mercury outboard, serial number 5897057, would have been manufactured in late 1981.
1970 40 HP Johnston outboard weighs 145 lbs.
I would say one per spark plug.
Need to know if its 2 or 4 cycle.
The plug gap for a 1995 model, 40 hp Mercury is .035 in.
An Oil Injected motor will have a separate Oil Resevoir, so mixing Oil and Gas is not required, and in fact inadvisable.
The dry weight of a 1984 model, 40hp Yamaha longshaft w/ electric start, is 165 lbs.
50:1
how do u check timing in a 40 hp yamaha 2 stroke
yes