I have looked online, and it looks like I can easily replace the spring (P/N 261911), however the link seems to be an issue (P/N 261611). It looks like the only option is to ship it from the US at nearly $70 (FOR A PIECE OF WIRE! :o)
Does anyone have any other ideas for the linkage? Can they be made from a piece of wire?
Possibly, but it would be a little difficult to get it right, without an original to duplicate. It's not a complex part - nearly straight, with z-bends at either end.
The critical bit is the length between the z-bends, and their orientation. The wire is nothing special - mild steel will be fine. You may have to make up a few lengths, to try them out. There is some leeway in the setup, in the form of adjusting the governor lever on its shaft.
This is the adjustment procedure:
There is another part P/N (260971) which appears to be for the models pre 1982 (pre 82121010) , that is available in Australia, would that be close enough?
Not extremely likely. But if it's cheap enough, it might be worth trying. From the IPL [
http://bsintek.basco.com/BriggsDocumentDisplay/Z6nlxBVJ1DajI.pdf ], it seems that the throttle control plate [part 222] changed on that date. But the throttle shaft and governor lever did not, so the reason for the link change isn't clear. It might be as simple as a slight bend added, for clearance.
If you run a search on FleaBay Oz, using 'briggs 261911', a couple come up ex the US which would land here for around $35. As AVB says, the Briggs price is a bit outrageous!
The pics are worth a look at any rate, if you are going to try making one up. Look for 'briggs 260971' as well, and compare the pics - they are very similar.