Re: Primer/Primer Solenoid Merc. 75 4stroke 01
look for blue wires to the fuel enrichment selonids. one for each cylinder. should click when you apply 12 volts. am quite sure the engine control module controls take care of this. no longer have my yamaha 4 stroke book ( went with the motor ) but my memory tells me there is 1 temp sensor that controls this function. fred