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Discussion Starter · #1 · (Edited)
I have a B & S 12hp I/C 12hp Model No. 281707-0125-01. I had to replace the head and have looked at 3 different sources for the specifications on the cylinder head bolt torque.

Two of them states that the torque specification for all 280000 (except 286700) should be 185 in/lbs. The actual "Service Manual" for the 280000 series states that it should be 165 in/lbs. Or, is the 20 in/lbs difference very minor in the grand scheme of things?

Can anyone supply a reference to which is the correct head bolt torque specification for the above mentioned B & S engine which has an aluminum block/cast iron sleeve??

Much appreciation ahead of time!!

185 in/lbs.
http://www.mylawnmowerforum.com/for...-specs-engine-specifications-chart_ms3992.pdf

165 in/lbs.
http://www.mylawnmowerforum.com/for...gine-specs-specs_single_cyl_lhead_engines.pdf
 

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i honestly think that if they are torqued around 140 they are fine. I think it is more important to have consistent torque
 

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Discussion Starter · #3 ·
Thanks a lot!! I'm just a little skittish when it comes to applying torque when aluminum is involved.
 

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I'm with 43128. More is not better when it comes to aluminum. Both numbers should work fine, but I might be inclined to lowball it a little and spend extra time making sure the readings are equal. :2cents:
 
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