YBR 125 brake fluid change

[Doomsnite]

Had mot on friday and garage said my front brake was spongy and should have failed but as it worked, it passed. Said that there was water in the fluid so will need to be drained and changed. Offered to do it for £40

Being tight i wouldnt mind doing it myself if i can but cant find any instructions on the net. Even the handbook says take it to a dealer. Is it easy enough for a novice or should i let them do it?
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Triumph Street Triple-R
Sold: Honda Hornet CB600F-Y / Yamaha YBR125

[Val]

there are zillions of videos about changing brake fluid

https://www.youtube.com/watch?v=09peSQc9ROI

https://www.youtube.com/watch?v=nmC5SsXnHTE

You need DOT 4 fluid https://www.halfords.com/motoring/engine-oils-fluids/brake-clutch-fluid/halfords-dot4-universal-brake-clutch-fluid-250ml

Having said that careful with brake fluid its dangerous and corrosive - protect the paint your hands and probably eyes!

on your place I would have flushing well the old fluid with new one - means putting new fluid and flushing it out until you are completely sure there is no old left - by seeing new good fluid going out at the bottom.
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Adrian Monk: Unless I'm wrong, which, you know, I'm not...
Yamaha Fazer FZS 600, MT09, XSR 900

[Doomsnite]

Thanks. I was looking for something specific for my bike but the vid you have given looks pretty universal
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Triumph Street Triple-R
Sold: Honda Hornet CB600F-Y / Yamaha YBR125

[Pigeon]

I found "simple" jobs like this a complete ballache. Hours spent watching Youtube clips, reading Haynes manuals and titting about in the garage swearing at my stupidity.

But, once done a couple of times, it is straightforward and can be quick and save some money. Plus you know its actually been done!

I would recommend the reverse bleed method, so you use a synringe + plastic pipe attached to the bleed valve to push new fluid into the system.
It saves getting RSI not having to pump the brake lever hundreds of times.