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990 Timing Marks?


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#1 Bunker Buster OFFLINE  

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Posted July 03, 2014 - 04:58 PM

I am working on my 990 with 16 HP Briggs. Are there timing marks to locate TDC when setting the points? If so, where? Thanks!

#2 boyscout862 ONLINE  

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Posted July 03, 2014 - 06:05 PM

We have excellant manuals on the old B&S engines in our Manuals Section http://gardentractor...pairman-manual/ and http://gardentractor...ines-1919-1981/  Download them and enjoy. Good Luck, Rick



#3 Bunker Buster OFFLINE  

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Posted July 03, 2014 - 06:09 PM

Thanks!

#4 glgrumpy ONLINE  

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Posted July 03, 2014 - 10:56 PM

Not sure there is any timing marks.  Just turn crank till points are wide open, which is about 75% of time, set to .020 for new and I like to use .018 for used and should be good. Check the flywheel key if you can see it if apart now. That is about only place you have control of timing is the key. Can be good, sheared and moved or just partly sheared, but still one piece. That throws timing off.



#5 Bunker Buster OFFLINE  

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Posted July 03, 2014 - 10:58 PM

Good info. Thanks grumpy. I need to tighten up the gap. It's well passed .020 just by eyeballing it.




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