Ec250 Output Shaft seal

[Scotty97]

Just about to fit engine casing but noticed that the is 2 O-ring seal on out put shaft and also the sprocket seal.

I have pushed sprocket seal into casing but was wondering when I fit the metal bush with the two o-rings.

Do I fit bush and o-rings onto output shaft first?? Or do I fit casing with sprocket seal and then push the the o-rings and bush in afterwards????

I read the workshop manual but doesn't mention the 2 o-rings???

[GGRider01]

http://partsfinder.onlinemicrofiche....0%20GEAR%20SET

This shows bearing - seal - 2 o-rings together and another seal? Maybe part 23 is the bushing, that would make more sense.

[Jakobi]

Yes 23 in the parts fiche is the bushing. It has a groove cut into one side to accommodate the o-ring. Both O rings go onto the shaft and the bush pressed in past the outer seal. If the bushing is grooved where the seal lip seats consider replacing it.

[Scotty97]

Yes the bush in talking about has a groove on one side where both o-rings sit.

Ok, il fit casing, and then slide o-rings onto shaft and then push bush into lip seal.

just wondering (for future reference), is it possible to change lip seal externally???
Do I just remove bush, and then pull lip seal???

All help is much appreciated!!

[Jakobi]

Yep. Remove circlip, sprocket, bushing, seal and O-rings.

[Scotty97]

Cheers!

We'll post man pat hasn't turned up, so looks like il have to assemble cases and push new seals in later!!

[Scotty97]

Would you recommend one or two reed block gaskets??

There's 2 in my kit

[slocalspode]

Originally Posted by Scotty97

Would you recommend one or two reed block gaskets??

There's 2 in my kit

I think the reason for the 2 reed block gaskets is that the 300 has a spacer
that is about 1/4 inch thick aluminum plate. I don't think the 200 and 250
have the spacer so only use one of the gaskets between the cylinder and
reed block.
Jeff

[Scotty97]

Ok thanks for reply

[GGRider01]

Originally Posted by Scotty97

just wondering (for future reference), is it possible to change lip seal externally???
Do I just remove bush, and then pull lip seal???

All help is much appreciated!!

The way I've done it on a few bikes is get a small wood screw. Screw it into the seal then use pliers to pull the seal out. Don't go too deep or you'll knick your bearings.