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Hot!Briggs 21 HP Single Cylinder. Bad rings?

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doug2500
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/07/10 21:49:40 (permalink)
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You are more optimistic than me, but I'll go ahead and do it.
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SRTsFZ6
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/07/11 07:11:06 (permalink)
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It ain't the space shuttle!   
 
Please post back how it goes...

Scott
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doug2500
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/07/11 18:54:24 (permalink)
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I'll let you know. I'm still looking for a rebuild kit.
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doug2500
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/07/29 14:52:01 (permalink)
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Ok, I got it mostly assembled today. I'm not sure of some torque specs.
 
It's a 20S232-1246-F1
 
Do you know the sump torque and valve cover torque?
 
I set the rod to 100 in lbs, the head to 220 in lbs, and the sump is at 160 in lbs right now but I've seen 140 and 200 in places.
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SRTsFZ6
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/07/29 21:20:33 (permalink)
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Valve cover, good and snug..
 
As for the rest:
https://outdoorpowerinfo.com/engine_specs/ 
 
 
.

Scott
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doug2500
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/08/26 10:47:13 (permalink)
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Finally got back to finish this today. It runs smoothly. But, it won't slow down unless I hold the throttle down. Thought I had it back together right, but I must have messed up something. ;)
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SRTsFZ6
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Re: Briggs 21 HP Single Cylinder. Bad rings? 2025/08/26 12:00:54 (permalink)
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You can re-adjust the governor but I suspect 
the governor moved, or broke internally.
 
That's the ONLY thing that would make it run wild...
 
Fortunately, just the sump cover has to come off to check / fix.
 
The orange part may have moved when assembled and not touching the arm

 

Scott
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