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LastonBoard · 05-18-2016, 02:20 PM

Monday afternoon I was out on my local river an felt my outboard bog down (Mercury 200 EFI). I immediately dropped it into neutral at which time it stalled out (no alarms went off)and I could not get it restarted. I brought it to a local marina and the mechanic rotated the flywheel (by hand with a socket) 9-10 times before it locked up. Based on that alone he diagnosed the problem as a seized powerblock and quoted me $7500 to fix it.

When a block seizes is it still possible to turn the flywheel by hand? Is there something else that could cause the fly wheel to lock after 9-10 rotations?

05-18-2016, 02:20 PM	#1
LastonBoard Member Join Date: Apr 2014 Posts: 32 Thanks: 4 Thanked 6 Times in 6 Posts	Seize Outboard or something else?? Monday afternoon I was out on my local river an felt my outboard bog down (Mercury 200 EFI). I immediately dropped it into neutral at which time it stalled out (no alarms went off)and I could not get it restarted. I brought it to a local marina and the mechanic rotated the flywheel (by hand with a socket) 9-10 times before it locked up. Based on that alone he diagnosed the problem as a seized powerblock and quoted me $7500 to fix it. When a block seizes is it still possible to turn the flywheel by hand? Is there something else that could cause the fly wheel to lock after 9-10 rotations?