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Few Briggs engines use valve seals and those use them on the stem of the valve, sometimes only on the intake side, to prevent oil blowby. If you refer to the seats that the face of the valve seals against, then the answer is not usually. Older engines(valve-in-block) have part numbers for them but it is an arduous task to get them to stay in the block. They are usually just cut and resurfaced and the valve is either replaced or cut. They are then set to the proper clearance by grinding the length of the stem.
Newer OHV engines simply have the head(s) replaced as needed and the valves installed and adjusted.
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Q: How do you change valve seals 16.5briggs and stratton engine?
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