One paragraph in the ahe attachment that Cyber-Jack kindly provided is qite interesting.
It states that the "newvwhite plastic poppett valve that has a small spigot and some lettering one of which is marked "C" must not be used as replacement for the original bleck poppett valve" (that had no markings.
.... It seems that Victa stuffed around with the LM carburette and made several design changes over the years? I think that I have unwittingly stripped down 4-carburettas and mixed up the parts never imaginging that there could be small but important changes within the mouldings and the internals..... A trp for the in-experianced!
Please also note that in desperation, I acted on the recommendation to change the muffler. When I did this I looked inside the export prt and discovered broken bottom piston ring. I've now sripped off the cylinder and found the bottom ring was broken in tw0 places with one fracture being right on the exhaust port. Top ring and cylinder bore was OK........ I'm now wondering if a broken bottom ring could cause my engine symptoms:
- Erratic up and down engine speed at wide open throttle position
- Unable to idle
- Little if any control of engine speed using throttle lever
I still have concerned with by "Bitza" carby as someone has called it but could the root cause be the broken ring???? ..... Your thoughts please gentlemen.
- BUMPS
