cooling system flush?

[lucyone]

Hi guys i'm needing a little help with my bike its a piaggio xevo 125

i took apart my cooling pipes to clean them out and what came out was like dirty brown water

is there a way to clean the system out without damages the engine ive never done it before so this is the first

any info would be great

[Rogerborg]

I just stick a hose in the top of the radiator and let it run until it comes out clear from the lowest drain point, which can take quite some time. I know some folk swear by flushing from the bottom up, but ain't nobody got time fo' that.
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Baffler186]

If it's that bad i would use radiator flush, or at least fill with correct amount of coolant, run up to temperature then drain. Repeat until no longer dirty.
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Current: 2009 SV650 S, 1990 Kawasaki GT550
Previous: 2009 CBF125, 1998 GSF600, 2004 FZ6 Fazer, 1978 CB400a Hondamatic

[Nobby the Bastard]

[lucyone]

thanks for the info guys i'll try the flush with a hose tomorrow
see how it goes