Running that 1988 Mercury 150hp XR4 Black Max oil-injected 2-stroke with carbs. Rectifier needs to be replaced, water pump should be replaced, battery cables have a lot of resistance, gear oil needs to be replaced. Spark & compression is good. Replaced the hydraulic system. | Outboard Madness
5:35
Running that 1988 Mercury 150hp XR4 Black Max oil-injected 2-stroke with carbs. Rectifier needs to be replaced, water pump should be replaced, battery cables have a lot of resistance, gear oil needs to be replaced. Spark & compression is good. Replaced the hydraulic system. | Outboard Madness
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