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Replacing a needles and seat in an engine that did not have one. The red needle seat, which direction does it face? Flat side to the needle or the side with the grove? Cant find this info or a diagram anywhere.

The side that has a groove for a flat head screwdriver goes towards the needle. The only way to install it.

If you are talking about the red float needle seat, used on Briggs carbs, the grooved side goes toward the carb body and the flat side toward the needle.

The side that has a groove for a flat head screwdriver goes towards the needle. The only way to install it.

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Not that kind of groove, it is circular and rubber. Not a slot and brass. But thank you.

I’m confused, are you talking about the seat which come in Briggs kit number 398188? If not what seat are you asking about?

Model number of engine so we can see what you are talking about. My previous response was incorrect as I was thinking of older engines.

The groove side goes down...... All Briggs are the same like that ~!~!

He's talking about the seat that comes in the 498260 Kit..... Those are common seats... You can buy just the seat and needle also....

398188 Yes that's the seat and needle he's putting in......

If that is the case, see post #3.

Rivets said:

If that is the case, see post #3.

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Yep you were correct Rivets ~!~!

398188 is the red seat I am talking about. Flat side or circle groove side towards the needle.

flat side toward needle.

Groove side down. The groove side faces the carburetor body. The flat side faces the needle. You can use the flat side of a 3/16th drill bit to install the seat.

34 years of working on small engines . i know a little but not everything.

So everyone seems to say flat side to needle and circle groove towards carb body.

If that is the case, it is good I asked you all, the B&S online help rep said the opposite. LOL