I bought a used starter for this outboard as its original was totally dead. The used replacement spins but its drive fails to spin outwords to engage the flywheel. Doesn't matter if I bypass the solenoid or not. The solenoid is good. <br /> It's a negative ground starter but polarity doesn't matter, spins the same direction either way and the same direction as the flywheel turns when pull started manually.<br />One guy I know suggested oiling the gears shaft and said that that often cured the problem but no, that's not helping. The starter, shaft and gear is not rusty, no broken spring.<br /> The battery is good and the same battery allows the starter to work normally on my '57 Johnson Javelin.<br /><br />Before giving up on this Merc starter and returning it to the seller for a refund, anyone here have any other ideas?