I bought a Mighty Vac tool to bleed my brakes after installing steel line and not having very good results from it. In the past I had used a syringe and other methods.

This thing rules. I should have bought one 20 years ago. Bleeding brakes was a 5 minute job, easy. Now the brakes are great. I bled the brakes on my SV650 for fun after doing the KLX!

Apparently it's useful for other stuff too. As far as I am concerned it's already paid for itself. They say you should bleed brakes every couple years, but I never did, until now.

 

I got the cheap Harbor Freight version and same experience. It is absolutely easy. Key thing is to use low vacuum so as to not suck air in around any seals (meant to seal against pressure, not vacuum) or the bleeder threads, or suck all the fluid out of the master cylinder reservoir before you can refill.

Best $30 I've spent on tools in a long time.

 

+1 on the MightyVac. Got mine 16 years ago when I could not, could not, get the clutch bled on a VFR750. With the MightyVac the job was done in 5 minutes. Also it made easy work of replacing a master cylinder in my daughter's Mazda pickup - getting new fluid throughout the system and the brakes bled was a one person job! As Mark mentioned, you need to be careful not to let the fluid in the master cylinder get too low - that will slow you down.