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Does my Briggs and Stratton engine have a shear pin?

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okrobie
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2023/07/17 11:29:14 (permalink)
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Does my Briggs and Stratton engine have a shear pin?

The other day I was happily mowing along and suddenly hear KLUNK KLUNK and the engine stopped. Upon checkung I found that I had hit a small stump no bigger than 1" diameter. 
 
Now the engine won't start. (plenty of gas and spark.) Seems to me that I have heard of engines like this having a shear pin.
 
Do I have one? and what to do next. I think I have the skills and tools to play DIY. Model Number: 128M05-0026-F1
 
Thanks, Jim
 
EDIT: I just found a good YouTube on the subject. I'll let you know how it works out.
post edited by okrobie - 2023/07/17 11:58:28
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    SRTsFZ6
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    Re: Does my Briggs and Stratton engine have a shear pin? 2023/07/17 19:46:36 (permalink)
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    I don't know of ANY Briggs engines that does NOT have a "key".  
     
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    okrobie
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    Re: Does my Briggs and Stratton engine have a shear pin? 2023/07/18 04:26:18 (permalink)
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    I got one at my local mower shop today, but they didn't stock the flywheel puller. I'm trying to make one. Does anyone know the thread size of the flywheel puller holes? I've tried everything in my junk fastener bin without success.
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    SRTsFZ6
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    Re: Does my Briggs and Stratton engine have a shear pin? 2023/07/18 08:33:14 (permalink)
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    You don't need a puller..
     
    Put the nut back on the crankshaft, not tight, to protect the crank threads..
     
    Put a pry bar between a solid part of the block and the back of the flywheel.
    Keep steady, moderate pressure on the prybar(pushing the flywheel upward).
     
    Give a couple of moderate smacks to the nut/crankshaft with a hammer (approx 5 lbs).
    The shock will pop the flywheel off and won't hurt anything.  As the key sheared, I suspect it won't be very tight at this time..
     
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