My engine started right away when I tested it before taking it to the lake this spring,<br />It started again at the lake and ran rough for about 3 minutes. It then died never to start again. I had my fried car mechanic over and he tested the spark which did not spark. I have replace the plugs and changed the gas and cleanded all three carbs. I would like to check voltage with a meter to see if enough is getting to the plugs any help would be great. I even have a toll-free number 1-888-866-5162 if anyone who works on these things could maybe describe some of the electrical componets and tell me what to do next. It does crank but will not turn over. posted messages are fine too. thank you for your help.