All Sears Outboards with model numbers 217.586000 and above where built by Eska Outboard in 1985 - 1986. Eska closed and stopped production in 1986.
Most of those motors used a 50:1 Oil Mix. Most used Plugs J-12-Y with a gap of .030
SEARS MOTORS with Model Numbers other than 217.???????? where built by:
225.?????? Chrysler Outboard
574..????? McCullock Outboard
Parts for McCullock Outboard are No Longer Available
Some Parts for Chrysler are avalible on special order only.