getting air in is not a huge problem, cause you can get it out easily.
To drain my coolant, this is what I did.
-before you begin, find out how much coolant is supposed to be in the bike, for the 2000-2002 I belive it is 2.2 or 2.3 liters... Make sure you put the same ammount back in again.
-make sure coolant is not hot! dont do this right after riding! having it warm is good, but not hot!
-right at the coolant pump, which is on the left side right in front of the front sprocket guard, loosen thelowermost bolt. It has a washer-type ring on it. You should see a couple drops of coolant come out if you got the right one, but the coolant won't flow because there is still a vaccuum sorta thing going on.
after making sure you have something to catch all the cooland below the hole you just opened (set it back half a foot, it will arc pretty far) Now remove the radiator cap, and the coolant should start flowing from the hole you opened earlier.
Once it stops coming out, there still be some left in the big hose coming out of the bottom of the pump, so you can disconnect that hose at the pump, and drain it out.
Now you can fill it back up, it is a good idea to flush it once or twice though, pour distilled water into the top of the rad, and keep doing that until you the liquid coming out the bottom is mostly clear.
When you fill it, use only distilled water, not tap water, and mix it will the coolant. Make sure the coolant you use is OK for bike and aluminum radiators. I used a 50/50 mix, but depending on the temperatures where you are, that might be a bit different.
If you can't get the full ammount back in, you probobly have an air bubble. Just turn on the bike for a minute, and it should work itself out, allowing you to add more coolant.
Make sure as well as filling the radiator, you also need to fill the resovoir back up as well.
When filling your rad and reservoir back up, leave the rad cap off. Turn over the bike with the rad cap OFF. Tap the rad hose a bit. Air bubbles will pop out of the open rad filler. That's good. Air bubbles suck. When there aren't any big air bubbles popping up, turn off the biek and close the rad cap.
Distilled water is recommended because all or most of the minerals are removed. So it will create less deposits in your cooling system. If you use "hard" water (out of the tap) then, after time, the cooling capabilities of your system will decrease due to mineral deposits that reduce the size of the water passages in the engine and radiator.
flushing it with distilled water is fine.. Actually if you dont wanna flush it with distilled, you can flush it with tap water (just stick the hose into the rad with the drain open) and let it flow for a while.. just make sure to rinse it once with distilled water after, then fill it back up.
You'll see silver screws on the upper fairing, right below the right handlebar, there should be 3 or 4 of them on the side of the fairing, unscrew them and you should have 2 more, its the black piece of plastic, unscrew them and remove the panel. The black panel as a tab or two so you'll need some force to pull it out. You should see the radiator cap right away.
Go buy a service manual for the bike. Flush the radiator with distilled water at least 2 times. Put new fluid in and run the bike before capping it. I am having pretty good results with water wetter and distilled H20.
Turn 9...you indicate to flush the system at least two times...is this what you did? I would think that if you were going from coolant to water wetter (ie: for trackdays or racing) you would need to do it so many more times. I just did this on my CBR600RR racebike and I must have flushed it through at least 8 or 9 times to really get the coolant out of there! [|)]
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