In my yard sits a Boston Wahler with a Johnson V4 90HP and good batteries. When I try to start the engine, the starter motor cranks but it is without much enthusiasm. The batteries are good and fully charged. The first cycle of the starter motor sounds like the battery is almost dead, than it does a few fast revolutions to continue like the battery is alsmost dead. All the time I keep the key turned. I replaced the starter motor to no avail. Does anyone have any idea??<br /><br />Thanks, Ray