Generator enclosure interior shows signs of soot, and there is a strong exhaust smell inside the housing during operation.

Safety first: Exhaust leaks can lead to carbon monoxide buildup. Do not work inside the enclosure with the engine running unless it is well ventilated and you have CO monitoring.

• Inspect exhaust joints: With the engine off, check all exhaust manifold and pipe connections for soot marks or black streaks indicating leaks.
• Tighten fasteners: Gently tighten manifold and flange bolts to the torque specified by Kubota. Do not overtighten and risk breaking studs.
• Replace gaskets: If leaks persist, replace the exhaust manifold gasket and any flange gaskets with OEM parts.
• Flex pipe: Inspect the flexible exhaust section for cracks or broken braiding. Replace if damaged.
• Ventilation check: Ensure enclosure vents and exhaust outlet are not blocked and that exhaust is directed safely away from buildings.