I replaced the pressure valve today on a Yami 150 HPDI and found a broken O-Ring lodged in with the valve. Was there an O-Ring in there from the factory? The replacement valve did not have the O-Ring. I am not talking about the grommet rubber that fits into the port of the motor, it is a 3/32 thick by 5/8 diameter ring. It was very brittle and broken open. If it was not supposed to be in there, where did it come from? Is there an O-ring like that in the water pump? I guess I could take the starboard motor apart to see if there is one in there but that will be for another day.
Changing Pressure Valve on HPDI
- Thread starter 1st grady
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