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Discussion Starter · #1 ·
Hi yer, first post on here. At the moment I'm sorting out a cx500 for my daughter and I've never had to deal with a watercooled bike before. So, I'm replacing all the coolant and so fat have emptied the radiator and flushed that through, put in so chemical stuff to clean the system out and then I'm going to drain that so I can flush through again and fill the system up with distilled water and anti-freeze.



Anyway, my question is, so I completely drain the whole system? as in take the radiator off, and drain the engine by undoing the drain plugs on the cylinders? and also, what is the simplest way to flush out the overflow tank? I took off the bottom hose and undid the cap, ran so water in from the hose pipe but it didn't seem to come out of the bottom union.
 

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Use a small plastic pipe and syphon the coolant out of the overflow bottle being careful not to taste any.



Some more info here,



http://www.pdsrecording.site90.com/cxgl500/Coolant.htm



Yes to fully drain the system remove the 10mm bolts from the front of the Cylinders and don't forget to replace them.They are low torque max 10 Ftlbs so decent hand tight(Use knuckle of Socket and wrench).



You can also safely stick a hose pipe into the engine side transfer pipe and flush through as well.



Remember the cooling system will need to be bled before finally putting the Rad cap back on.
 

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There are quite a few "radiator flush" threads on here, just type that into the search box and you'll find over a dozen. Also, read through shep's page: http://www.pdsrecording.site90.com/cxgl500/Coolant.htm



Basically, some people want to do the entire system and will take it all apart and empty the cylinders, while others will just flush and fill a few times and call it good. I'm just going to go with vinegar and flush/fill instead of complete disassembly, basically following all the steps in the link above.
 

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There are quite a few "radiator flush" threads on here, just type that into the search box and you'll find over a dozen. Also, read through shep's page: http://www.pdsrecording.site90.com/cxgl500/Coolant.htm



Basically, some people want to do the entire system and will take it all apart and empty the cylinders, while others will just flush and fill a few times and call it good. I'm just going to go with vinegar and flush/fill instead of complete disassembly, basically following all the steps in the link above.


The last Rad I did I put it in the sink and made a couple of Citric Acid,"Bombs" to clean my kettle and then poured that,red hot,into the sink and let the Rad soak overnight.Really shifted the crap out of it
and a lovely cup of tea




http://cgi.ebay.com/Free-Citric-Aci...483?pt=LH_DefaultDomain_0&hash=item2c5a297173
 

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Discussion Starter · #7 ·
Cheers for the replies chaps, I'll be flushing the whole system tomorrow before changing the plugs, oil and replacing the brake disks and bleeding the brakes. Still, that's not a lot of work for a bike that my daughter got for nowt
 
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