Re: Yamaha 80 HP 2-stroke - timing
cant help much other than to tell you ign timing isnt your smoking problem.
aeto will indicate its either an 84 or 85 US market motor or an non US market motor.
you will find idle timing in the 5*atdc range and WOT timing in the 18-20* BTDC range.
but first you must identify the motor in questions market as various countries had different specs for the same basic engine.