7mileout.... the reason I want to lean it out is because the person before me got the choke cable stuck all the way open and I guess enriched the air/fuel mix to compensate. My boyfriend fixed the cable so the choke works properly now. But it seems to be washing out the sparks. There was even a little bit of fuel residue on the air filter. You can smell fuel from the exhaust, air filter, and the plugs are wet/black.
Any lead on a different screw to install so I can easily adjust it? The pilot screw is shaped like a D so its hard to adjust while on the bike.
joynsharp - The following is not being a smarty pants. I'm not smart at all, I just *try* to figure things out. The following is written as me sounding out what I'm thinking, to help you and the rest of us hopefully sort things out, and get your bike up to peak running condition.
If the person before had the choke cable pulled, I'm assuming this means the choke was activated. The choke is an enricher than it is a choke. My car's Edelbrock carb actually chokes off the air, hence the name choke. But in the case of the Rebel, this choke doesn't control air from my understanding. It controls fuel. Allowing another port of fuel to enter the flow. I believe that's how it works.
It the previous person had stuck the enricher activated, it would have ran more rich. And now that your boyfriend has fixed that enricher, it would now be running more lean (than before). At this point, it shouldn't be fouling the plugs (which is what you mean I think by "washing out the sparks.") But perhaps the spark plugs are fouled beyond their useful life from the previous running with activated enricher.
If by fuel residue you mean the filter smells like gas. Well there could be a lot of reasons for that, and mine probably smells like gas too. I'm going to have to disregard that. But all the other wet / black / smell conditions could stem back to running the bike with the enricher active (too much fuel).
This is what I would do. Take the carb off the bike. That idle screw, if it is difficult to access, I believe it is the one that comes from the factory with a sort of plug, to discourage changing that setting. I would leave that alone if it is indeed still covered with a plug. Then I would do as flitecontrol mentioned. Followed by replacing the main jet to the factory size .108" main jet, and a factory jet needle. Unless (and I don't remember) there are markings on these main jet and jet needle to confirm they are stock size. I don't think the Rebel runs any better on any set up other than the factory setup.
After that I would slap fresh new correct spark plugs in it with correct gaps. I think you would see a vast improvement with these things.