Ahh, this is just the screw holding the stop / idle speed adjustment
which sits externally to the carb - whether the throttle plate screws
(although I think it might only have one, without going to look) are also
snafu is another matter :-) I don't think I could get the stop off
without completely trashing it, but it shouldn't be too hard to make
something functionally equivalent anyway.
Yes, that'd be my worry, too, getting it all aligned properly.
Yep, same deal here. Maybe drilling slightly larger than needed and then
epoxying the new sleeves in place (using some kind of rig to keep it
aligned while drying) might work. Modern epoxies seem to be pretty robust
- I even filled some quite serious scoring in the cylinder bore of my
"junk" engine with the stuff, and so far it's taking the oil and heat and
having piston rings sliding past it just fine (I tried it more for
chuckles than anything, but it's really surprised me how well it's
holding up). If it can take that kind of abuse, it'd likely last in a
carb body, too.
Yeah, I don't think that whatever metal they're cast from is particularly
hard, so I'm not surprised that they wear long before the shafts do. But
then 25 years isn't bad for something that was probably only designed to
last a fraction of that, either.
On Thu, 26 May 2011 00:13:55 +0000 (UTC), Jules Richardson
The carb bodies are "generally" die cast zinc. The best way to
re-bush one is to take a good one and fixture it on the mill, using an
end-mill, reamer, or transfer punch as a locator, then put the old
carb in the fixture with a larger end mill or reamer, then press in
new bushings and mill/ream back to proper size , again in the fixture.
On 5/25/2011 9:15 PM, firstname.lastname@example.org wrote:
From previous posting...
I do suspect could manage if really gave it a try but so far it's been
possible to find a replacement (although the last one may have been the
end of line on new replacements for that particular model; it was only a
new old-stock happen to find distributor w/ a couple still on hand that
saved having to do something different then and that's been several
As long as it's close enough the throttle plate shaft doesn't bind and
the throttle plate ends up reasonable well centered in the throat, it's
not terribly critical. Hitting "pretty near" center would be ok.
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