Toooo funny, that's the second time today I was asked that. I'm being lazy - here's a cutnpaste..
Saw your thread about draining the coolant during a search on the board ( https://www.rc51forums.com/forums/showthread.php?t=5219 ) and had a couple of questions if you don't mind (I have the service manual & read through chapter 6 already):
1 - How many times did you have to drain/refill/flush to get the distilled water in there to drain out looking "clear?"
Or, was it not possible until you removed each radiator and flushed them out?
2 - Was it a pain to "burp" the cooling system of air after refilling with new coolant? One or two attempts or several?
3 - I wasn't clear on this after reading chapter 6, but after burping the air out and letting everything cool off again, do you top off coolant at the radiator itself are you supposed to top off at the recovery tank instead?
Got a couple bottles of Pro Honda HP coolant in the garage, but might wind up splurging for Engine Ice - decisions, decisions...LOL
1. twice, I think I use 4 gallons of disstilled water.
I wanted to remove every bit of water from the system after. You have to remove the rads to do that. So I removed both rads, removed the fan, (SP1 has only 1), and cleared all the hoses too.
2. The burping went exactly as it said in the manual. Not a hassle at all. Start the bike, have the cap off, watch your temp closely as she warms up. Once she hits 174-180 the thermostat should be full open and you'll have full circulation of your coolant. You can see the coolant actually start to flow pretty fast. That's how you know your thermo is open. That's all good. Within a a minute or so, you'll see airbubbles burp up. It's like waiting for popcorn to finish cooking. When there's no more burping, it's done.
3. When the bike is completely cool, the overflow level should right at the mark on the bottle, bike standing up. If it's to full, it'll overflow and drip out the hose. And splash all over. How do I know?
Have a fresh rad cap, or pressure test yours. Take your overflow bottle off and clean it out real good. inspect , clean, all the hose connections. Make sure the smaller hoses flow freely. If you do all that, your flush should go problem free.
Engine Ice. Good luck bro!