I have a 67 mark twain with 4 cylinder inboard and itgoes ingeargood but when i putthrottle to it itslikeitcomesout of gear. it will idle in gear all day. anyone know what it could be? it dont makeanynoise or viberate....

Mercury Marine

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poorboyracing711

I have a 67 mark twain with 4 cylinder inboard and itgoes ingeargood but when i putthrottle to it itslikeitcomesout of gear. it will idle in gear all day. anyone know what it could be? it dont makeanynoise or viberate.

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