Mercury 40 HP flywheel question

Theadmiral

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Mar 28, 2008
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I have a 40 HP mercury outboard (manual start) that had one of the magnets break up on the flywheel.

I managed to find a used replacement flywheel but noticed that the replacement had a thin stainless steel ring covering the magnets which the original one never had.

My question is, is this an improvement to the the ones without the ring to help prevent the magnets detaching or is it a different type of flywheel? Also, I would have thought that a steel ring would affect the magnetic field?

The new flywheel fits Ok and the motor turns fine but when I try to start the motor it kicks back pulling the starter cord out of your hand. It's trying to start but it's like the ignition timing is out?

Any help/advice would be greatly appreciated.
 
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