I have a 1991 Johnson 60Hp OB, The starter spindle is spinning but not engaging the flywheel. I tried two fully charged battery's. I rotated the spindle and engaged it manually and it would hardly attempt to turn the flywheel. I could hold the spindle on the starter with my fingers and prevent it from spinning. I bought a rebuilt starter $180.00 and it does the same thing. Did I buy a bad starter? Is there anything else that could cause this condition? I jump the 12V directly to the Starter and it still behaved the same way. I used the boat every weekend this Spring and summer till 2 days ago when this happened. any Ideas? 