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  1. #1

    Default Problems with Yamaha outboard

    Last time I boated it would sometimes be touch and go with power. When I got home I upgraded to a c227 filter and also put in brand new spark plugs. Next time I'm out it starts but wont stay on. Checked the fuel lines and I do think some water was getting in there before but not with the new filter. I live in rural Alaska and the only mechanic in town thinks it could be the carburetor. What do y'all think?

  2. #2

    Default Re: Problems with Yamaha outboard


  3. #3

    Default Re: Problems with Yamaha outboard

    Is the model of the motor not known?

  4. #4

    Default Re: Problems with Yamaha outboard

    2008 yamaha f40bejr is the model. Sorry I should have included that.

  5. #5

    Default Re: Problems with Yamaha outboard

    If the problem occurred after the c227 filter was added I might want to remove that filter and see what happens.

    If the filter is not causing the problem then I would tend to agree with your mechanic. The carburetors on the F40B model are known to be very sensitive to any debris within. They have to be completely cleaned. Usually in a heated ultrasonic cleaner. Then the holes and passageways have to be verified as being free and clear. Particularly the accelerator pump circuitry.

    Some folks have had to install larger jets to get the motor to run well.

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