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JohnF2015, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1102
Experience:  Owner/Service Technician at S & J Small Engines
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Briggs and stratton 21 hp model 331877 head bolt torque spec

Customer Question

Briggs and stratton 21 hp model 331877 head bolt torque spec and sequence
Submitted: 1 year ago.
Category: Small Engine
Expert:  JohnF2015 replied 1 year ago.

Hi, my name is***** will be assisting you.

You will want to torque the head bolts to 225 in. lbs. using a crisscross pattern. I normally start with the top right corner and work around the head going from there to the bottom left and then moving over one bolt and across the head to the next one until they are all complete.

I would do a two step torque, first torque at 160 in. lbs. and then take it up to the final torque or 225 in. lbs. from there.

Thank you it has been a pleasure to assist you.

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Customer: replied 1 year ago.
The correct was 220 in lbs 225 in lbs could have striped the bolt holes thank *****************
Expert:  JohnF2015 replied 1 year ago.

The service/repair manual that I have shows 225. I only relayed the information that I have available.