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Author Topic: H75, H74, and H73 engine cylinder upgrade  (Read 2451 times)

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Re: H75, H74, and H73 engine cylinder upgrade
« on: February 10, 2023, 01:15:53 pm »
JohnnyQ90 has a Video on YouTube where his new H75 leaked water. He removed the Cylinders and replaced the original (Undersized?)  O rings with 19 X 1.9 mm O rings and this fixed the water leakage problem.
 
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