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briggs and stratton Quantum xm

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islayhawk
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2025/05/21 08:41:26 (permalink)
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briggs and stratton Quantum xm

I have a Quantum xm 12f802 - 1959- b
The governor spring has broken. When I go online the parts list shows 2 springs..does this engine have 2. There is only one on it but the mower has never run properly since I bought it 3rd hand so possibly there was 2
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    SRTsFZ6
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    Re: briggs and stratton Quantum xm 2025/05/21 11:07:41 (permalink)
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    https://www.jackssmallengines.com/jacks-parts-lookup/manufacturer/briggs-stratton/briggs-stratton-engine/100000-19z999-series/12f800-to-12f899/12f802-1382-01/controls-fuel-supply-governor-spring
     
    Just one spring.  Either part # 209 or 209a
     
     
    What exactly is the issue?  Wild super high running, surging, ??? 
    .
    post edited by SRTsFZ6 - 2025/05/21 11:08:51

    Scott
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    islayhawk
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    Re: briggs and stratton Quantum xm 2025/05/21 12:41:57 (permalink)
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    The spring is broken. However before that it just didnt take 'revs,'. Cutting grass took an age so I assume that the broken spring didnt help..
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    SRTsFZ6
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    Re: briggs and stratton Quantum xm 2025/05/21 14:14:18 (permalink)
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    Ok (it was in your first post).
     
    Once you get the new spring and installed, wherever it attaches to, to raise the RPMs
    bend the tab to put MORE tension on the spring.  That'll raise the RPM's.
     
    .

    Scott
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