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Head bolt torque


Jack B.'s Avatar
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02-16-08, 01:23 PM   #1  
Head bolt torque

Could someone tell me the head bolt torque on a Briggs OHV model-31Q777. The best I could find is 165 in-lbs or 13.75 ft-lbs but this doesn't really seem to be enough!

 
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AAWrench's Avatar
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02-16-08, 01:33 PM   #2  
My chart show 220 inch lbs for this series engine.

 
Jack B.'s Avatar
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02-16-08, 02:18 PM   #3  
Thanks for the reply AA.

 
Jack B.'s Avatar
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02-16-08, 06:42 PM   #4  
Let me ask you another question- I am replacing the head gasket on this engine, and I noticed the exhaust push rod comes up approx 1/4" but the intake push rod comes up approx 1/8''. Is this normal?

 
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02-16-08, 09:17 PM   #5  
No, it should move more than 1/8 inch. It should be about the same as the exhaust.


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Jack B.'s Avatar
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02-17-08, 03:37 AM   #6  
Thanks Cheese. I think I'm going to have to disassemble the engine so I can find my trouble, The engine was hard to turn over however it would start and run O.K.. It's a model 31Q777 B&S on a cub cadet. It was blowing oil all over and it had some positive pressure on the crankcase. I pulled the head off and found the head gasket in bad shape between the cylinder ond the valve cavity. I also replaced the breather reed valve (which didn't seem bad).

 
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