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  1. #1
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    Default BCS 715 goes wild right after starting

    Good Afternoon

    I have a BCS 715 and right after I start it the engine will quickly run super hard (very high rpms) and keeps escalating to where its immediately concerning and I shut it off. Now I made sure the throttle was at its lowest and the governor bar was also disengaged, the choke was open, but still it goes nuts.

    The engine is an Acme A220b with a dellorto FHCD 20 16 carb. Now I must say that I have never used this machine as I just bought it off of someone.

    Could this have something to do with the carb settings?

    Could this also have something to do with the governor needing to be readjusted?

    Let me mention again that the throttle was fully disengaged and the engine went wild.

    Does anyone have any suggestions as to the best course of action of things to check and do?

    Thank you

    Ryan
    Last edited by dolomite792; 03-28-2013 at 09:30 PM.

  2. #2
    Elite Member TomSeller's Avatar
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    Quote Originally Posted by dolomite792 View Post
    Good Afternoon

    I have a BCS 715 and right after I start it the engine will quickly run super hard and keep escalating to where its immediately concerning and I shut it off. Now I made sure the throttle was at its lowest and the governor bar was also disengaged, the choke was open, but still it goes nuts.
    Governor bar disengaged? Needs to be connected.

  3. #3
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    Default Re: BCS 715 goes wild right after starting

    No the Governor is connected.

    I loosened the bolt on the governor bar took a screw driver and turned the actual governor shaft all the way right started it and it made the engine go super fast when I started it so I stopped the engine. Ok now then plan B so then I turned the governor screw all the way left and it went slower but its still going nuts when I start it.

    I also started playing with the idle mixture screws on the carb. The engine chugged but still started going way too high even when starved for fuel.

    I uploaded a video of it:

    Click here to see it on youtube

  4. #4
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    Default Re: BCS 715 goes wild right after starting

    It seems from reading the manual I found the correct position of the governor screw and the governor arm and throttle.

    I've also completely cleaned out the throttle needle and it moves super smooth now and so the float should be functioning perfectly as it moves super fast up and down as compared to before. From a test pull it smelled much more lean than it was running before which is good.

    I will try it first thing in the morning to see if this has improved anything.

  5. #5
    Elite Member TomSeller's Avatar
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    I think you are on the right track. The tiller looks to be in good shape, good luck.

  6. #6
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    Default Re: BCS 715 goes wild right after starting

    Quote Originally Posted by dolomite792 View Post
    It seems from reading the manual I found the correct position of the governor screw and the governor arm and throttle.

    I've also completely cleaned out the throttle needle and it moves super smooth now and so the float should be functioning perfectly as it moves super fast up and down as compared to before. From a test pull it smelled much more lean than it was running before which is good.

    I will try it first thing in the morning to see if this has improved anything.
    You need to add sea foam to your fuel and then you will be fine.

  7. #7
    Elite Member TomSeller's Avatar
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    Dolomite, did you get this fixed? Just curious.

  8. #8
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    Default Re: BCS 715 goes wild right after starting

    Quote Originally Posted by TomSeller View Post
    Dolomite, did you get this fixed? Just curious.
    Nope the engine is done. Know anyone who wants some good Acme A220b parts?

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