butterfly removal?

[tranger03]

Good Eve Gents,

How do you remove the butterfly from the throttle shaft. I tried removing the two screws and then pulling it out but that didn't seem to be working so I thought that there might be a trick of the trade. Also, would I have any problem swapping an engine from an 80 xs11 into my 78. I didn't notice any differences right off the top.

Thanks,

Camron

[skids]

As I remember it, that is all there is. There can be problems with removing those screws since they are sooo tiny and are loc-tited. I suggest that you leave them alone unless you are dunking the carbs or are replacing the seals.

[Ken Talbot]

IIRC, the screws are peened over on the back sid to lock them in place. You wouldn't want these guys coming loose and getting sucked into the combustion chamber. Use a dremel to grind off the flare, then use loctite when you reassemble.

[tranger03]

I had managed to get the screws out without too much problem. It was when I was trying to get the actual plate out that it felt like it was jamming inside the carb body. Also, I am going through all of this so that I can paint the carb bodies. Is it absolutely necessary or can I just remove the spring and paint around that area.

Thanks

[petejw]

the throttle plate can become stuck and hard to get
out if u tend to twist the plate, try placing the plate
back in the shaft, i find if u hold the butterfly fully open
and pull the plate evenly and straight, it tends to come out easier, also ive
used pliers to grip the plate, just b careful not to damage it.

as for the little screws that hold them in, i just had 2 vibrate loose
from my ride on mower after 5 yrs of never having touched them, didnt bend any valves as they passed thru but put a nice
hole in the piston instead.

[Ken Talbot]

Originally posted by tranger03
I am going through all of this so that I can paint the carb bodies. Is it absolutely necessary or can I just remove the spring and paint around that area.

You can get a pretty decent paint job without removing the butterflies. Like you suggest, disassemble the bank and remove the springs. Anybody who looks close enough to spot the difference is looking too close.

[audijunky]

I have noticed that giving them a little wiggle from side to side helps to get them out. JM2C

[xssiveone]

They could also have some buildup on the shafts inside the carb body.

Brian