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    Yamaha water pressure ?

    I just replaced the water pump kit on my 1992 Yamaha 130.Running the engine with muffs @ 1,000 rpms the gauge reads 10 psi. Once I increase the rpms over 1500 rpm the gauge starts jumping around between 5-15 psi.<br />Hopefully this is just caused by impellar vanes flexing as the rpms increase.
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