Bleeding air from cooling system fe450 09

Flextacy · Feb 27, 2015

Hey guys,

Probably a silly question but I need to replace one of the lower hoses on my 09 fe450 - once replaced & topped with new coolant do I need to bleed any air from the system? If so where do I bleed it from?

berglsmerg · Feb 27, 2015

Let it run up to temperature with the radiator cap off and wait for the thermostat to open, it will bubble and spit out some coolant then the level will stabilize. Let it cool, check the level and you're done.

Flextacy · Feb 27, 2015

Nice one thanks for that

Kevinmack · Mar 17, 2015

While cooling, how much should be the level?

berglsmerg · Mar 17, 2015

Just above the cores. Any more and it will spit it out.

Ballsjeep · Jun 3, 2016

Does this work as an alternative to using the bleeder valve? I believe the manuel says to use the bleeder valve. Ive located mine (second owner, first supermoto) and this is the condition it was in. Not sure why its like this.

Ballsjeep · Jun 3, 2016

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FE350 · Jun 4, 2016

Most bleeder ports are at the highest point in the system to release air. Thus saying the rad cap would be a high point. My KTM has a bleeder on the rad at the top. My Husa has nothing just the cap. Air will rise to the highest point, in some cases a vacuum bleeder is required to suck out the air, but have never had to use one on a bike.
I would take Bergls advise as it does work fine.

Bleeding air from cooling system fe450 09

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