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Waynelinthicum
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2019/10/31 20:22:08 (permalink)
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Flywheel bolt torque

I have a craftsman riding mower with a Briggs and Stratton engine 31G777-0806-E1, can you tell me what the torque in pounds-feet I should use on the flywheel bolt, I just replaced the alternator
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    kshansen
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    Re: Flywheel bolt torque 2019/11/06 07:06:43 (permalink)
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    As no one has jumped in to answer this person's question I'll add to it!
     
    I did a bunch of searching on line trying to find an answer but even the Briggs chart I found does not list a 31G777.
    My question would be is a 31G777 motor considered the same as a 310000 Model series engine?
     
    If that is the case then the spec's would be in this chart:
    http://www4.briggsandstratton.com/miscpdfs/RNT/Engine%20Specifications%20Chart_ms3992.pdf
     
    Did some more digging and on a Briggs site put the 31G777-0806 in as a model number and selected to download an operators manual and the manual that comes up shows the 210000, 280000, and 310000 Itek engines on the cover. Still would like to have a straightforward answer as to why they stick a "G" in a model number and add so much confusion!
    post edited by kshansen - 2019/11/06 07:23:06
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    AVB
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    Re: Flywheel bolt torque 2019/11/06 07:56:27 (permalink) ☄ Helpfulby kshansen 2019/11/06 19:06:33
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    Actually the torque has been changed back in February 2012 to 110 ft-lbs then the crankshaft and flywheel key ways were changed July 01, 2012. These are not interchangeable. Also due flywheel change due to a design problem a new steel key is used on the 21, 28 , 31, and 330000 series with date code before 120701xxxxxxx.
     
    The "G" is just a design series designation when it is the first character after the displacement. If it is the second character after the displacement then it would be the crankshaft orientation.
    post edited by AVB - 2019/11/06 08:04:19
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    kshansen
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    Re: Flywheel bolt torque 2019/11/06 19:10:33 (permalink)
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    AVB, I guess I was wrong to think that a chart posted on www4.briggsandstratton.com would be up to date!
    But I see that that chart is dated October of 2004!
     
    Glad you were able to catch it and post the information!
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    AVB
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    Re: Flywheel bolt torque 2019/11/07 08:25:46 (permalink)
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    Yes you think the chart would be up to date but even the one on the Power Portal isn't that having copies of the ASPIs and DSBs are important.
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