Generator emits excessive black smoke from exhaust during operation.

Safety first: Avoid breathing exhaust fumes. Operate the generator in a well-ventilated outdoor area only.

• Check air filter: Replace a dirty or clogged air filter element.
• Verify load: Ensure the generator is not severely overloaded, which can cause black smoke.
• Inspect fuel system: For diesel units, have injectors tested and serviced if smoke persists. For gas units, verify gas pressure is within Siemens specifications.
• Turbocharger (if present): Listen for unusual turbo noises and check for oil leaks. Turbo issues require professional service.