That sensor is the crank trigger for the CDI. So the o-ring was sealing off the 2 bolts that hold the sensor to the crankcase? I'm not sure why there would be oil passages next to that sensor???
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First Chinabike: 2006 Roketa RSX200E
Current Chinabikes: 2023 Titan DLX & 2022 Lifan KP Mini w/ 210cc BRT kit, 22 RWHP!
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