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    Is it the engine coupler that has gone bad?

    Installing a new Drive/Bell housing gasket set, is it recommended by Mercury and/or others to add gasket sealant to each side of the gasket or one side of the gasket or there is no need for any gasket sealant? Also, the gasket set includes the O-ring for the water intake and the inner seal. But...
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    Is it the engine coupler that has gone bad?

    Thank you for all your help. One question concerning your answer, what do you mean by “check the input yoke”?
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    Is it the engine coupler that has gone bad?

    Thank you for your help and taking the time to check out my issue. The alignment is good. Unfortunately for me the reason the coupler likely failed is because of the lack of it being greased. Like I said, I’ve had only outboard motors for over 30 years and that maintenance point is something I...
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    Is it the engine coupler that has gone bad?

    If I remember correctly, before I took the boat out of the water, I started the engine trying to determine what was wrong and the vibration and noise was noticeable immediately with the drive in neutral. So I suppose if I started the engine with the drive removed, and if it is the coupler, the...
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    Is it the engine coupler that has gone bad?

    With shifter in full forward, prop locks ccw and turning the prop ccw using two hands, the drive shaft going into the engine coupler turns the coupler. I can see the grease fitting on the coupler going around when the prop is turned ccw. It takes a good amount of effort to turn the prop ccw by hand.
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    Is it the engine coupler that has gone bad?

    Yes, I drained it and put new gear lube in the day before this happened. And the reservoir was at full level. The drained gear lube looked really good.
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    Is it the engine coupler that has gone bad?

    I have a Mercruiser inboard/outboard with Alpha One gen 2 drive. I took my boat out for the first time this season. Was pulling a tube for about 30 minutes when suddenly stopped moving. Engine running but no movement. I pulled the throttle back to neutral, put back into gear and no movement...
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