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To test the voltage regulator on a Yamaha 350 Big Bear, start by checking the battery voltage with a multimeter; it should be around 12.6 volts when fully charged. Next, start the engine and measure the voltage at the battery again; it should rise to about 13.5 to 14.5 volts if the regulator is functioning properly. If the voltage exceeds this range or does not increase when the engine is running, the regulator may be faulty. Additionally, inspect the connections and ground to ensure there are no loose or corroded wires affecting the regulator's performance.

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2d ago

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