12.5 B&S timing

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  #1  
Old 07-30-08, 02:55 PM
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12.5 B&S timing

i have the bottom case off my briggs and stration 12.5 the crankshaft gear fell off and the cam gear has been moved. how can i retime the gears before i put the case back together? thanks
 
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  #2  
Old 07-30-08, 04:57 PM
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There are marks on both of the gears, should be a dimple or dash on a tooth of each gear. Just rotate the cam and crank to line the marks up and drop the cam in.
 
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Old 07-30-08, 05:15 PM
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ok the only thing that fell was the gear on the crank, its keyed so no problem, the cam pully has a dot on a tooth. is all i have to do is align the dots together? i know that is not full top dead center, but i guess that would be for timing? if only i hadnt let it fall off i wouldnt be in this mess. but the cam was not removed just the gear was rotated after the gear fell off the crank.
 
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Old 07-30-08, 05:24 PM
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Yes, all you have to do is align the timing marks. If you can post your model number, I may be able to find an illustration for you. Usually there is a dot on the cam and a dash on the crank (may be the other way around) gear used for alignment, but I guess it could also be two dots.
 
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Old 07-30-08, 05:30 PM
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ok ty, my model number is 289707 and type is 154 01 hope this helps would love a illistration of it. thanks
 
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Old 07-30-08, 07:30 PM
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This is all that I could find that I had, take a look and see if it will help you any.

Best of Luck....

www.imower.com/ipl/singletiming.pdf
 
  #7  
Old 07-31-08, 12:36 PM
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thanks, that looks like it so i will try and just align them 2 dots up. thanks a lot. i really appreciate it.
 
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