I have a slight oil leak coming from the Cyclone Breather so I took it off and found that the O ring that fits into the engine was shot. I have carefully cleared the bits out.
I have looked on Ians the parts list in the General Forum (couldn't see it) L R Series have lots of O rings but dont say what they relate to. Google gives one possible LLO100000-B... but searching the usual dealers comes up no trace.

Can anyone help me out with a part number and a place to order one without paying silly minimum postage please.... I have tried. Many thanks

could always nip round to these fella's and see what they have got lying around the shop m8.

they do cylinder repairs so should have something to get ya mobile

This the part that you need:

LLO100000 - O-Ring - Engine Cyclone Breather - LLO100000 - ID:2176 - 7XD - 5331997954001 - MoD Army & Military Surplus Parts

They don't work very well anyway. I put a new one on mine a few months ago and it developed a weep. When you fit it, ensure that the recess on the cyclone breather is clean and oil free and that the o ring its self is dry as a bone. Slap a load of silicone / hylomar around the assembly and then stick it back into the rocker cover and tighten it up. That seems to have worked for me. Alternatively, you could make your own using a sticky backed rubber pad / foot that you can but to fit on the bottom of your radio etc. Cut the centre out, stick it on and then give it a good shove into the rocker cover - it shouldn't leak past that.

-Pos

Thanks Gegs and Pos.... I can see the problem replacing that O ring, if it aint spot on it's going to leak again but its worth a shot. Cheers

I found the part on L R Series..... just in case anyone else needs one its called an O ring oil seperator part No LLO 100000 (as Pos mentioned) cost 40p. Worth putting one on your next order if you use L R Series for parts for when you clean out your cyclone breather.
Not having a rubber screwed my weekend

Same situation could find lots of 'O' rings at Motor Factors, but these were not wide enough. I found a 15mm Speedfit plumbing connector lying about in the garage. This has a 'O' Ring fitted inside that is the right width and diameter.