OK, just so I don't hold people in suspense.
Got ahead of myself earlier. When I said I had spark, I actually checked the spark plug with the donor machine, not the repair job. Plug is okay, but found that the Stop switch (cutoff) has parted company from it's wire. Got my first inkling that someone else had already attempted repairs, as the screw holding in the Stop switch was burred, so couldn't replace without drilling out a screw. Managed to re-solder the wire on the switch. NOW I have spark.
Also noted that replacement carby had the fuel tap operating in the wrong direction. Sticker on mower says Fuel on is to the front of the engine, but carby has tap saying the opposite. Checked old carby & tap direction matched the sticker. Also noted second hint of someone attempting earlier repairs. Engine side of carby had markings consistent with someone unsuccessfully scraping something off the surface.
Have decided to go back to original carby. As well as a replacement bowl (something told me rust & fuel don't work well together) and bowl gasket, I decided to get a set of replacement gaskets for between carby & inlet manifold. These are now on order & will be fitted when arrived.
Have attached some pics of carby before & after cleaning.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2016/01/full-9875-26496-sanli_oldcarb.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2016/01/full-9875-26497-sanlicarbybowl.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2016/01/full-9875-26498-sanli_carbcleaned.jpg)