|
Post by Rocketdog on Dec 23, 2009 17:28:52 GMT -5
Yep. It might work for him, then again he could just try a jet first. If your not confident with moving the float. And you need to be able to measure carefully.
RD
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 23, 2009 19:21:48 GMT -5
Now that is something I would NEVER have thought of and it sound very plausible. I'll have to file that tip away even if I don't use it now. Thanks for the tip and the explanation RD.
Phil
|
|
|
Post by Rebel on Dec 23, 2009 20:25:42 GMT -5
Yep. It might work for him, then again he could just try a jet first. If your not confident with move the float. And you need to be able to measure carefully. RD " And you need to be able to measure carefully." It has been my experience that just a hair too much and you start having flooding problems, so measuring is very important.
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 23, 2009 20:35:30 GMT -5
Yeah, I'd be dragging out the "lighted magnifier visor" for that one - fer sure.
|
|
|
Post by Rocketdog on Dec 24, 2009 7:39:39 GMT -5
Sorry about that guys. I have a tendency to go off on a tangent every now and again. I get a bit off the main subject. Folks go, "RD what the heck are you talking about?". hehehe Good thing I have Rebel to steer me back in line. Here's some good solid info on the basics of carb jetting. www.battlescooter.com/1.htmlRD
|
|
|
Post by Rebel on Dec 24, 2009 15:07:32 GMT -5
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 26, 2009 9:49:52 GMT -5
Nice RD, that is the best explaination on jetting that I have seen. But what I'm getting out of the article is the A/F screw is used to tune a properly jetted carb for the current atmospheric conditions and not as a substitute for proper jetting. So with the article and help from y'all, I guess I need to open the carb up and see what I have (what size jets etc...). It would seem that tuning scooter carbs is part science and part magic. I may have to buy another scooter so I can tinker and ride ;D . Again, I greatly appreciate everyones help. Hope everyone had a good Christmas, Phil
|
|
|
Post by Rebel on Dec 26, 2009 12:40:13 GMT -5
philr54, buy a second carb and play with one one of them. Leave one alone, play with the other until you get it where you want it. They are pretty easy to take off and put on and much cheaper than a new scooter. Who knows perhaps the second carb will actually be set up right for the scooter.
|
|
|
Post by Rocketdog on Dec 26, 2009 19:07:24 GMT -5
Not a bad idea Rebel. The best advise on carb tuning is to do one thing at a time, in small increments. Where most folks make mistakes is doing way too much all at once. Check out a spark plug reading web page. That helps a good deal.
RD
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 27, 2009 15:17:33 GMT -5
OK, got some time off and decent weather (at the same time ). Popped the top on the carb, removed the spring and this came out. I don't know what is retaining the needle, no screws or clips are visible. It's plastic so I don't want to put too much pressure on anything. Any ideas on how to open this puppy up and access the needle? Phil
|
|
|
Post by Rebel on Dec 28, 2009 2:52:23 GMT -5
Do you see any groves near the top of the needle? There should be a "C" clip holding it.
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 28, 2009 4:00:09 GMT -5
I can't get to the needle. Second pic is looking down the plunger, there is a stem that looks like a handle of sorts but i've been unable to remove it. I tried pushing down and turning left and right (gently, it's plastic) and pulling and turning. I don't want to strongarm it. I'll order a new carb today (hopefully with an adjustable needle) for the scooter before I take another try at removing the needle. I've read about moving the c-clip and shimming with washers so that's not a problem. Don't know if I'm up to cutting new grooves yet. I'll get it right yet (with a little help from some rebels).
Phil
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 28, 2009 5:13:08 GMT -5
This diagram appears to be what I have. Looks like I'll have to shim the needle with washers if I can get it apart. Phil
|
|
|
Post by kliff on Dec 28, 2009 7:46:17 GMT -5
OK, got some time off and decent weather (at the same time ). Popped the top on the carb, removed the spring and this came out. I don't know what is retaining the needle, no screws or clips are visible. It's plastic so I don't want to put too much pressure on anything. Any ideas on how to open this puppy up and access the needle? Phil Needle nose pliers, push down, turn left. Different versions, from diff manuf require anywhere from a 30* turn, to nearly a 180, It willl come out, buy another carb, and most likely, you'll be staring at the same problem. It doesn't require the muscles of a body builder, but a slight amount, more than suspected, effort, will be necessary. ;D
|
|
philr54
Non-Com
fuel system apprentice
Posts: 118
|
Post by philr54 on Dec 28, 2009 11:24:18 GMT -5
Thanks Kliff, once I found the exploded diagram, I figured it should come out but the little info I could find is somewhat vague as to how. I don't want to break anything as this is my only transportation for now.
Phil
|
|