yes... when it cools off, open the radiator cap and fill it up. it also helps to start the bike with the cap still off to get some of the air out. but alot of times there's still some trapped in there that won't come out till the Tstat opens.
there's a few different ways to get that last little bit out. but most of the time i just fill it, start it, top it off, put the cap back on and go ride it till its up to temp. as long as it doesn't over heat, wait till the next day when its cool again and take the cap off, start it and top it off again. by then it should be fine and pull the last bit of water it needs out of the resvisvor tank.
are you saying to empty my resvisvor( lol) . and why?
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