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Jan 23rd, 2013
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Lower Unit Noise #13387737 12/30/19 11:49 PM
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Fishbonz Online Content OP
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I have an old 150hp Merc Blk Max XR4 motor that still runs strong However I`ve noticed lately at low enging rpm`s there is a hard kicking noise coming from the lower unit when I give it throttle. It goes away after a few seconds.I`ve never hit a stump or anything but I`ve checked the lower unit visually and found no cracks or damage.Does anyone have any idea what could be going on? [Linked Image]
[Linked Image]

Re: Lower Unit Noise [Re: Fishbonz] #13387805 12/31/19 12:52 AM
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Have you checked the grease in the lower unit? If so did it have metal in it?

Re: Lower Unit Noise [Re: 2014NITROZ-7] #13387936 12/31/19 02:45 AM
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Originally Posted by 2014NITROZ-7
Have you checked the grease in the lower unit? If so did it have metal in it?
I hadn`t considered that since I replaced the old grease no less than six months ago and it had no traces of metal.

Re: Lower Unit Noise [Re: Fishbonz] #13388112 12/31/19 12:47 PM
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may be jumping out of gear at low rpms I would try to adjust the shift cable a few turns toward forward gear to gget a little better engagement and see if it goes away


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Re: Lower Unit Noise [Re: boatwhisperer] #13388385 12/31/19 04:42 PM
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Originally Posted by boatwhisperer
may be jumping out of gear at low rpms I would try to adjust the shift cable a few turns toward forward gear to gget a little better engagement and see if it goes away

I don`t mean to sound Dum.......but uh just how do I do that? hmmm

Re: Lower Unit Noise [Re: Fishbonz] #13388563 12/31/19 07:10 PM
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if you like u can contact me and I can explain to you how to do it 817-455-8377


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Re: Lower Unit Noise [Re: boatwhisperer] #13388618 12/31/19 08:05 PM
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Originally Posted by boatwhisperer
if you like u can contact me and I can explain to you how to do it 817-455-8377
Expect a call

Re: Lower Unit Noise [Re: Fishbonz] #13390452 01/02/20 02:35 PM
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sounds like the shift cable needs to be adjusted


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Re: Lower Unit Noise [Re: boatwhisperer] #13390691 01/02/20 06:25 PM
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Originally Posted by boatwhisperer
may be jumping out of gear at low rpms I would try to adjust the shift cable a few turns toward forward gear to gget a little better engagement and see if it goes away

Thanks Dennis! I`ll let you know how it turn`s out! thumb

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