My carb rebuild

[Larry D]

When I remove the needle valve seat I marred the pit side of the seat. I guess this is to be expected?

You mean like this ??
Mine are working fine.

[Texas]

Yeah, they look just like that! Sorry I only have the one set & I have to repair them. And thanks for the starting tip I will remember that!

[Texas]

moving right along

All four carbs are apart except for two hold out air screws, I'll get 'em !!! The float brackets were a little bent ( what was he thinkin) ?

[Nessism]

Not cheap but if you get stuck... http://www.z1enterprises.com/detail.aspx?ID=2556

[Texas]

moving on

Ok, the heads are gone on two of the air screws. I've made a choice to bypass them! I think that would be better than possible damage I may do. They are factory set and I never got them to move. When I dip them I will keep them above and out of the dip . Everything is below them anyway that needs cleaning.

[Steve]

Ok, the heads are gone n the two of the air screws. I've made a choice to bypass them! I think that would be better than possible damage I may do. They are factory set and I never got them to move. When I dip them I will keep them above and out of the dip . Everything is below them anyway.

Actually, you might be better off getting a spare set of carbs. While the screws are 'factory set', it does not mean they are right. If you keep those jets out of the dip, you will not be cleaning any of the idle mixture passages, and they are the ones that will be most noticed as they affect how the bike runs at idle and low throttle openings. In other words, most of your in-town running.

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[Texas]

moving on

I have found other carb cleaning sources that say the air screws don't get to much dirt because they are above the float line. I think its worth the chance. Removing them again not that hard. The two I cleaned were really clean, and it ran good before it was stored.

[Texas]

moving on

I have found other carb cleaning sources that say the air screws don't get to much dirt because they are above the float line. I think its worth the chance. Removing them again not that hard. The two I cleaned were really clean, and it ran good before it was stored.

[Larry D]

I have found other carb cleaning sources that say the air screws don't get to much dirt because they are above the float line. I think its worth the chance. Removing them again not that hard. The two I cleaned were really clean, and it ran good before it was stored.

If you think it's worth the chance...go for it. Keeping in mind that, if, down the road you have the problems stated earlier, that this is your likely culprit.

[Texas]

main air jets

I noticed that my main air jets have a number stamped on them , I think it reads 150 but it could say 750 . this puzzles me , they are suppose to be 1.6 . Does this stamped number mean anything ? Has someone changed the jet ? Do I need to find new ones ?

[Texas]

main air jets

never mind , I found it .

[Steve]

I have found other carb cleaning sources that say the air screws don't get to much dirt because they are above the float line.

That might be, but they are not just "air" screws.
They actually control how much of a pre-set mixture is allowed to get to the intake throat.
The mixture is controlled by the pilot fuel screw (in the float bowl, next to the main jet) and the pilot air screw ( in the side of the carb's intake throat).

.

[Texas]

carb rubber plugs ?

What do the rubber plugs inside the fuel bowl do ? Do I need to replace them ? Has anyone ever left them out ? 1981 GS 550-T

[Steve]

What do the rubber plugs inside the fuel bowl do ? Do I need to replace them ? Has anyone ever left them out ? 1981 GS 550-T

The rubber plugs inside the fuel bowl control fuel flow. With the plugs installed, the pilot jet and needle jet have to draw fuel through the main jet first. Without the plugs installed, the pilot jet can draw straight from the float bowl, but so can the needle jet, and the passage that the rubber plug covers is a LOT bigger than the main jet, so you will run really, really rich.

Yes, you need to replace them if they don't fit snuggly. See above for why.

Yes, I have left them out. That's how I found out what they do and how important they are.

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[Gyi2os]

My strength is low due to heart transplant

Not to drag this off-topic, but holy cow. Heart transplant? Good that your still with us and able to ride/work on the bike!