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  1. #1

    Join Date
    Jun 2012
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    10
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    Southeast
    Mower
    Craftsman

    Briggs hard to start...

    Briggs hard to start... won't turn over hardly.

    New battery - 300 CCA
    Clean terminals
    About 13-volts at battery

    Briggs 31P 777
    18.5hp

    Barely turns over when cold or hot... starter gets hot pretty quick.

    Valves need adjusting?
    Bad starter?

    Thanks

  2.  

  3. #2
    pugaltitude's Avatar
    Join Date
    Jan 2012
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    924
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    Scotland
    Mower
    Lots

    Re: Briggs hard to start...

    Could be electrical fault or valve problem.
    Make sure all elec connections are clean.
    Valves may need adjusting as engine might not be able to get past compression stroke due to clearances being too high.

    Does the engine turn over without the plug? If yes then try valves.

    Clearances are 0.003-0.005 on intake and 0.005-0.007 on ex.
    http://www.briggsandstratton.com/sup...0the%20valves/
    The "best" engine you will ever own!

    Briggs & Stratton MST.

  4. #3

    Join Date
    Jun 2012
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    Craftsman

    Re: Briggs hard to start...

    It turns over real easy with the plug out.

  5. #4

    wjjones's Avatar
    Join Date
    May 2011
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    Tennessee
    Mower
    YS 4500, and DYS 4500, and Bunton 61" ztr

    Re: Briggs hard to start...

    Quote Originally Posted by pugaltitude View Post
    Could be electrical fault or valve problem.
    Make sure all elec connections are clean.
    Valves may need adjusting as engine might not be able to get past compression stroke due to clearances being too high.

    Does the engine turn over without the plug? If yes then try valves.

    Clearances are 0.003-0.005 on intake and 0.005-0.007 on ex.
    http://www.briggsandstratton.com/sup...0the%20valves/



  6. #5

    Join Date
    Jun 2012
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    Location
    Southeast
    Mower
    Craftsman

    Re: Briggs hard to start...

    Adjusted the valves and charged the battery... all is well now. thanks

  7. #6


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    lawn mower fanatic's Avatar
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    Honda HRX, Honda HRR

    Re: Briggs hard to start...

    Quote Originally Posted by Riverman View Post
    Adjusted the valves and charged the battery... all is well now. thanks
    I'm glad you figured it out, and thanks for letting us know what solved the problem!
    -lawn mower fanatic

    Equipment:
    4x6 utility trailer
    Honda HRX217HYA mower---Honda HRR216TDA mower---Craftsman 24" 179cc dual-stage snow blower---Echo SRM-225 trimmer---Echo GT-2100 trimmer---Echo PB-255LN handheld blower---Echo PE-225 edger---Black and Decker 22" electric hedge trimmer

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