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Joined: May 2008
Posts: 44
Novice
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Hi All
Just rebuilding my 11hp Briggs and found the retaining bolt for the drive pulley missing. The Cox number for the bolt is SH0720F but what I'm after is the size and thread pitch? Anyone seen this or will it have to be a genuine Cox part?
BTW The bolt not listed as a B&S part on my drawings.
Thanks
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Joined: Jan 2015
Posts: 1,525 Likes: 23
SENIOR TECHNICIAN
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What are the engine numbers?
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Joined: May 2008
Posts: 44
Novice
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Joined: Jan 2015
Posts: 1,525 Likes: 23
SENIOR TECHNICIAN
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The 498994 crankshaft was tap at 7/16"-20 tpi UNF-2B 1" deep per Briggs crankshaft drawings.
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Joined: Jan 2015
Posts: 1,525 Likes: 23
SENIOR TECHNICIAN
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Here is the crankshaft drawing. ![[Linked Image from i1329.photobucket.com]](http://i1329.photobucket.com/albums/w548/ke4avb/498994%20crank_zpscclojxmn.png)
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Joined: Jan 2009
Posts: 6,926 Likes: 10
Pushrod Honda preferrer
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So, the thread is 7/16" diameter by 20 threads per inch - in other words, you need a 7/16 UNF bolt. The end of the crankshaft is tapped 1" deep. To select a bolt length you need to know how thick the washer or whatever clamps onto the end of the crankshaft is.
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Joined: May 2008
Posts: 44
Novice
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Thanks for the info. I'll put the pulley on and do some measuring.
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