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Test the engine in a water tank or on the water
A: This 5/16" (8mm) assembly is designed for a wide variety of Yamaha outboards from 4HP to 350HP
Specification Value OEM Part Numbers 396725
Confirm both shutters (two per engine) are securely in place
Hand-thread all mounting bolts to prevent cross-threading
32-90949T Exhaust Tube for Mercury MerCruiser 120 140 | JLM Marine family-yamaha-6mshs Test the engine in a32 90949T Exhaust Tube for Mercury MerCruiser 120 140 This exhaust tube is designed specifically for Mercury MerCruiser 120 and 140 sterndrive engines featuring inline 4 cylinder configurations (153 181 CID). It provides a direct replacement solution for older model sterndrives manufactured between 1982 and 1995, ensuring proper exhaust routing and engine performance. This aftermarket component directly replaces OEM part number 32 90949T, delivering