Hello Grumpy, I am doing a run of OHV engines and do have 2 x GXV140's to do.
So that information is great.
I haven't touched a GXV120 as yet.
I swapped the magneto on the Chonda because the lead was broken on the Pope engine.
If I repair the lead it will more than likely be serviceable.
Please see images of Victa V40 engine.
This one has the disc breather, the previous 2 engines had what I call a reed valve type breather.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2014/10/full-4730-17831-v40_breather.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2014/10/full-4730-17832-v40_2.jpg)