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    80's model 30HP Mariner help

    I recently purchased a Jon boat with a Mariner 30hp (Model# 30AE689 401221). After having the carbs cleaned at the local outboard shop, due to stitting for just short of a year, it still will only run up to half throttle. After half throttle it just bogs down. Tried changing the prop to a lower...
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    mid to late 80's Mariner 30HP

    Hi all, I have a Mariner 30hp (yamaha version) Model# 30AE689 401221? that will only run half thottle. Good compression, clean carb. I also had a Yamaha 40HP about the same year a while back that acted EXACTLY the same. The Yamaha dealer unplugged the "overheat sensor" and cured it. Does...
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    1995 Johnson 150HP

    Hello all, I am looking at buying a used boat that has a 1995 Johnson 150HP outboard. The boat orginally came from this dealer but they say they do not have any maintaince records. It seems to run fine. What can I ask the marine dealer to do to the motor, besides a compression check, that may...
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    86 Yamaha 40hp sputter

    I have a 86 yamaha 40hp that has new water pump, fuel lines, fuel tank, and clean carbs. It idles great and accelerates great, but after it reaches about 3200 rpm it starts sputtering/chattering and drops off rpm. Anything below the 3200 rpm/half thottle and it runs OK. I have a service manuel...
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    Yamaha 40 no power

    I recently purchased a 1986 Yamaha 40 ETLJ and have a service manuel on order. I took the boat out and it ran fine until I got ready to leave the lake and there was no electrical power including trim and tilt. I checked all of the obvious things, like battery and connections, and even bypassed...
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