Yamaha HPDI 150 mystery filters replacement
After reading about how to replace the mystery filters in the high pressure pump on The Hull Truth, I decided to make a video of my work. I am not a mechanic and nor do I claim to be one. I merely followed the steps posted by others who have replace these filters and video taped it with my go pro. My Yamaha motors are model year 2000 HPDI Z150TXRY so this video might be slightly different from the other models. If anyone has any comments on how to replace these filters easier, please let me. My filters had some material on them and I ended up gaining 200 rpm on my top end by replacing. I tested the motors when running and my pumps were constant at 725 psi. By replacing these filters at $0.50, this saves the $700+ to have the pump professionally serviced. Enjoy!

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