Have just found this spring,,2nd from top piston spark plug is not varnished,,,other two are,,,just ran a couple times last fall,,,,,is this piston not firing????:eek:
have a 90 hp force outboard,think its a 1990 year model,,,but dont know,,,would like to buy a shop manual ,serial number#900-817608-C ,found on the top intake manifold of the block,:confused:
