Power valve o rings?
-
The kickstart side is straightforward, simple groove that fits perfectly. It’s the gearchange side that has no groove or place for a seal. The previous owner had the orange one just flopping around and a black smaller o ring squashed flat between the bush and the cover. Neither of those two are affecting a seal. I’ll check and see if there’s a paper gasket for that side. That would be enough of a seal...
It’s frustrating when the last owner didn’t know what they were doing, it makes reassembly a bear!... -
@SpookDog Oh Yeah
How annoying.Sorry, it looks like they are blocking that resource.
It's a parts diagram showing you where the O-Rings go.
https://www.fowlersparts.co.uk/main/img/assemblies/large/e2bbdd33f448b949dadded717beb407f.png?6
I'll get it hosted elsewhere and link it in.
-
Fowler’s don’t like hotlinking apparently!
I found the diagram, unfortunately it is different from what I have fitted. I found I can affect a seal if I slip the oring over the end cap. Without it the whole cap/bush is very loose. It slops around loads! Whereas the other side is a good fit.
I wasn’t even sure if it was original to the barrel. Who knows what butchery was done before. The PV has 3bn on it I think, yet the barrel is 3mb. I don’t know if there’s a difference. I’m still fumbling around in the dark. The only other 2strokes I’ve worked on were air cooled, ts er’s, and more shedloads of Vespa & Lambretta’s than I can recall. I don’t recall them having an oring between them
Cheers bud! -
Sorry, was busy thumb typing on a tiny screen!🤪
It’s not just the bush, the end cap it fits into also seems small. Plus it’s fixed, doesn’t move...
I’m guessing that the 3mb was a later servo operated valve? Totally different end cap on that side?... -
Sorry, was busy thumb typing on a tiny screen!🤪
It’s not just the bush, the end cap it fits into also seems small. Plus it’s fixed, doesn’t move...
I’m guessing that the 3mb was a later servo operated valve? Totally different end cap on that side?... -
Dont do what I did when I was being stupid and try and fit the o-rings onto the power valve itself lol
They go into the end caps and there is also an orange seal for the pulley end as well
I also got a black o-ring in my Athena gasket kit from PJME and have no idea where it goes
Wish it was the thermostat one as I need one but its the wrong size
-
@Calum there is an o-ring under the thermostat itself with the gasket above that
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login