Evidently my tach is not set right. I have a 3 cylinder Yamaha 40. Tach has setting for 4,6,8 cylinder 4 cycle and one marked 12-pole. Which one will work the best 4 or 12-pole ? It was set at 6 cyl and was only showing 2500 at full throttle. <br /><br />Thanks <br /><br />David
