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I already did this once last year but I guess I forgot because I can't figure it out. Normally you just push and slide but that doesn't seem to be working here. This is a 675 model off of a craftsman lawnmower. Theres the retaining clip that holes the spring on, then theres the little cap that goes on top of that, which pushes against the rocker. I can't get either of those two parts lose! What am I doing wrong?
Unfortunately I forgot to take a picture :/

If it is a L-head config mostly you are dealing the keyhole type retainer. Position the retainer the outside notch toward you, depress both the spring and the retainer fully, and then gently pull the retainer toward you to unlock the keyhole. Then the valve is removed so you can slip hole the spring and retainer. Just some valve stems tip can be damage making a little more tricky to do.

If I'm not mistaken, the rocker has to come off, then push down on the spring and slip the keeper sideways off the valve. These springs do not have very much tension like the older engines.

Pictures would help if you can take some and attach them.

Auto Doc's said:

If I'm not mistaken, the rocker has to come off, then push down on the spring and slip the keeper sideways off the valve. These springs do not have very much tension like the older engines.

Pictures would help if you can take some and attach them.

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This is an L-head engine, not an overhead valve engine.

Ok I got the valves out, i was stock on removing the caps but they came right off, then the sliding clips came right off, and now I'm all good. Well, except for this . . . The old valve seal vs the new one, they sure do look different. Whats up with that? I ordered via part number so it should be right. Also some of the rubber tore off the old one when I was removing is, meaning I can't reuse and also meaning it doesn't look like a valve seal, but it is. Theres nowhere for the new one to seat in. What do you make of this?

Ok I looked up my motor number again (09P7020144F1) and looked up the valve seal part number (590534) and what I see on jackssmallengines looks like the original, not the one I bought.
But I didn't buy from jacks, I bought on ebay. But the part is supposed to be an OEM part and it came sealed in an OEM parts bag.
So is there some way to use the "newer style" valve seal on my engine? Or did B&S reuse the same part number for two different seals? Its hard to search because most websites, including B&S's own parts side, don't include a photo of the part. But those that do show a completely different seal. Is there some way to make it work I'm not seeing?

This is why we need the actual model number and not the layman model name as the 675 come both in L-head and overhead configs.

But you have ordered the wrong the seal as you must order the date code. You need PN 590534 not the 84001271.

The model number is in the previous reply. And 590534 is the part number i ordered that seems to be wrong. Where would one find the date code?

Sorry I miss that you posted the PN. I am dealing with three issues on this end the site being a pain, My wisdom tooth acting up, and a major computer crash. I think I have resolved the computer crash but it took 12 hrs of working on it. Appears the motherboard crashed.

This is what ereplacements is showing what the 590534 looks like which means someone apparently sent the wrong part as there is no part bulletin on a change from Briggs.

StarTech said:

This is why we need the actual model number and not the layman model name as the 675 come both in L-head and overhead configs.

But you have ordered the wrong the seal as you must order the date code. You need PN 590534 not the 84001271.

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Star you were not wrong assuming what you knew in the OP when you were the first reply. We didn't find out the actual model number until post 6 or post 5 if you count the overhead valve picture.

Tiger Small Engine said:

This is an L-head engine, not an overhead valve engine.

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Never seen an L-head with a rocker like he mentioned.

Auto Doc's said:

Never seen an L-head with a rocker like he mentioned.

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Auto Doc's said:

Never seen an L-head with a rocker like he mentioned.

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Auto Doc's said:

Never seen an L-head with a rocker like he mentioned.

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I obviously know the difference between an L-head engine and an OHV engine. I said that early in the thread when he was describing things.

So when I search for the valve seal part number (590534), I'm finding both seals types, the one that fits my machine, and the one that doesnt. Do they have two different parts with the same part number? How do you differentiate?

Example: 590534
But then: 590534

Contact someone who knows and can verify. Jack's Small engine is a great source.

The more people I contact, the more contradicting info I find. I emailed B&S through their parts website and I got a reply that said 'uh oh i think our stock is wrong, we'll get back to you' . It is very annoying.

I have to wonder how many of these old-style valve seals they have sold in recent years. It is apparent to me that someone got lazy, a few years ago, and combined the SKU numbers without actually verifying valve seal design differences. I've seen this "mix up" happen once before with this same part number.

You know what would SIGNIFICANTLY help prevent this? If stores actually posted pictures of the parts, instead of using a generic B&S logo as the image for this thing. MOST websites including ebay selling these seals use the logo instead of a real photo. No wonder there is confusion.

l008com said:

You know what would SIGNIFICANTLY help prevent this? If stores actually posted pictures of the parts, instead of using a generic B&S logo as the image for this thing. MOST websites including ebay selling these seals use the logo instead of a real photo. No wonder there is confusion.

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Definitely would get them more sells from me as I prefer to verify that I am ordering the correct parts. Just too many that are too lazy to do this simple step. Now I admit I use the images to research a part alternates at times. The more info I have on a part the better I serve my customers.

I had one that actually unbox items for imaging purposes and so note on package that been open for this purpose. I had no problem with them doing this as it help everyone later.

But when someone at the vendor has a bright idea of combining part numbers without knowledge of what they are doing, it causes a lot problems. They should do their homework if any doubt.

You supercede a part number enough time you hit a point were the part you started with is no longer the part that you want.