Maintenance & Technical > KX500 Original
Idle Kick-Backs v.II
mikesmith:
Try it,just do a SHORT ride and check the plug,Itll ping if its to lean and to rich wont hurt it.I know with my bikes jetting it effects my gas mileage and power a lot,so I like to keep it jetted as close as I can, so trying differnt things is part of it.Dont forget the air screw adjustment.
Twist-a-grip:
Take and mark your throttle in 1/4 increments. These carbs you have to jet according to throttle position to make sure you are tuning to proper ciruit. I usually start at the main(full throttle). I then go down and get the bottom set,idle-@1/4throttle(pilot/air screw ). All that is left is tuning the midrange(needle).
Each area the motor will tell you what it wants, give it what it wants. I like to start rich and gradually lean it until it just cleans out. It will blubber and hesitate if it is too rich and acceleration will be poor. Too lean and the engine will lose power, run hotter than normal and make what I call a crackling sound. Once you get it all tied together your power will be seamless with no notable change from one circuit to the next.
kawdude:
Okay, this is what I've done so far. The bike is rich (I think). Plug is black and splooge coming out the rear.
1. Replaced reeds with Boy Power Reeds. Hopefully to cure hard starting.
2. Dropped slowjet to 55 from 58.
3. Moved clip up to 2nd position since it appears rich. May go to the 4th position to see what happens since what I'm hearing may be pinging.
>>Bike Idles :shock:.
When I started the bike the first time since making these changes the bike started and bogged and died. :?: This happened twice. It was dripping gas on the floor...not much but some. After getting it started, the bike still appears rich. No bog but just runs rough seemingly all thru the range. This is more noticeable after midthrottle. Unfortunately, wasn't the best day to do this work. Cold and rainy. Wouldn't the cold lean the mix?
Also, In playing with air screw I can't say that it changed anything. If I turned it right (IN) the bike would try to die if not saved by a quick rev but going the other way didn't seem to make a difference. For my area I can't believe that I need a 52...
Folke:
Dont change slow jet to 52, not under 55.
Check silencer so the inner pipe not is broken.
kawdude:
--- Quote from: Folke ---Dont change slow jet to 52, not under 55.
Check silencer so the inner pipe not is broken.
--- End quote ---
Why not?
I also noticed that the slide in this carb is stamped "7". Isn't the standard 6 :?:
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