Re: Wont run, I quit.
Disconect the black/ yellow wire from the switchbox and test for spark at the plugs with a timming light with ALL the plugs grounded. Hook the light to battery and the pickup wire from one plug wire to the next and see if the timming light will light up. If the plugs will fire then your trouble will be in the electrial as a ground is being put to the switchbox and should not be. If there is a wire from the selonid to the switchbox that could be your problem as th should not be there.The plugs are what should be in the motor with just a surface gap. Look on the control for a small toggle or push pull switch that should have a coiled cord on it that would be the kill switch. There is also a mercury tilt switch on the side of the motor that will kill the spark when the motor is tilted in the up position. Depending on the control you have you will have to do certian things inorder for the motor to start. A picture of the control would help, as we would know what one you have. You realy need to get a wireing diagram for that motor to understand just what is to go where. As for the button on the throttle lever, If it is square and in the center of the pivot it disconects the shift cables and allows you to push the lever to the center of the boat and forward and allows the carbs to open up and advances the timming some so the motor will start and stay running.
Don't give up yet as you will know alot more and have a greater satisfaction when you do get it to running. Leave it set for awhile and have a few cold drinks and relax. It realy helps.
