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Post by stripersniper on Mar 18, 2012 15:03:20 GMT -6
Hey guys, I have a Mers 115 4 stroke and when i engauge the prop intp forward to go it makes a hard loud clunk noise. I bought the boat used and its always did that but for some reason it just dont sound good. Any recomendations? Its idleing at correct rpms.
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Post by stripersniper on Mar 21, 2012 18:27:56 GMT -6
No one has any suggestions???
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BoutTime
Master Chief
Posts: 337
Location: Emerald Isle, N. C.
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Post by BoutTime on Mar 21, 2012 18:41:08 GMT -6
Not sure about how loud the noise is,but my Johnson 115 used to make a little clunking noise when shifting in and out of gear. I changed the lower unit oil to Amsoil synthetic oil and it has eliminated the clunking noise.
IF the noise is deafing you may have some worn gears in the lower unit and that could be a major repair. Have you checked the lower unit oil? Is it full? Does it have a milky look ? Does have a metalic look or a grit feel to it?
If it has either I would change the oil to a synthetic oil like Amsoil and try that. Be sure to get the right weight oil for your outboard. If it still makes a loud clunking noise then you may have some badly worn lower unit gears.
Hope this helps get you started in resolving the issue.
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