Hi.
First of all great forum guys, just came across it when browsing around the web. My problem though is with my SP470 with 2200 motor. When I do my magneto checks the first one is fine drops about 50rpm but when n switch the second one off the rpm gauge goes to zero. The engine still runs fine and the rpm doesnt drop at all just the gauge. Can the gauge be wired incorectly.
Thanks