Kohler Engine Oil Leak

Oil leaking under generator or oil spots on pad

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Loose or damaged oil filter, Loose drain plug, Crankcase gasket leak, Valve cover gasket leak

How to Fix / Troubleshooting

Safety first: Turn generator OFF, open main breaker, and allow engine to cool before touching oil components.

  • Locate leak source: Wipe down oily areas and run briefly to see where fresh oil appears.
  • Filter and plug: Tighten the oil filter by hand (do not overtighten) and snug the drain plug. Replace the filter gasket or plug washer if leaking.
  • Gaskets: If oil seeps from crankcase or valve cover gaskets, gasket replacement may be required.

Always refill oil to the correct level after leak repairs and monitor closely on the next few runs.

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Repair Difficulty

Medium 3/5

Required Part

Oil Filter
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