Intake valve stem install on 3.5 hp 450 series

[Herbielee]

I was doing a full service and decided to clean the valves and head of carbon build up. I have damaged the intake valve stem oil seal. I have sourced a new seal but don’t know how to get old one out of install new one. Any help appreciated!

 

[Fish]

Can you put up a pic and engine model number?

 

[Herbielee]

Here is what you asked for any help appreciated.

 

[StarTech]

10T502-0141-B1

Exhaust valve stem seal. Remove valve spring and gently pry off the seal. New seal is just put in place and the valve spring once install seats the seal.

 

[Herbielee]

It is the intake valve oil seal. I ve had the springs out. You can only access the seal from the end you put the valves in. Also you have a different model listed. I have attached a photo of the the motor diagram and In red you will see an arrow, that is where the intake valve oil seal is

 

[Herbielee]

Here’sthe other image

 

[StarTech]

All I can go by is the IPL and it shows it is on the exhaust.



And so what is the model/type you are looking up?

 

[Herbielee]

It’s 9T502-2091B1
I have two identical mowers, looking up this one gave me the engine same as mine. It’s definitely the intake valve. It’s the oil seal between the two chambers ie valve stem and spring

 

[Herbielee]

868 is the part but it doesn’t really show it in any of the diagrams I’ve looked up. The part is there but doesn’t show where it actually goes. It might be an unserviceable part. I put it all together with the damaged seal. The little spring on the oil seal has gone off and it’s slightly damaged. Started no problem and used it for around 2 hrs. No problem at this stage, I’ll just have to wait and see how it goes. Thanks for the help!

 

[StarTech]

Then maybe you should had posted the right numbers from the shroud. This is what you posted.

Same setup indicated on that IPL too. But of course you can argue with Briggs Dealer Power Portal if you wish.