Generator emits excessive black smoke from exhaust under load

Safety first: Operate in a well-ventilated outdoor area. Avoid inhaling exhaust.

• Check air filter: Remove and inspect the air filter element. Clean or replace if dirty or oil-soaked.
• Reduce load: Open the output breaker and remove non-essential loads. Reapply load gradually and keep within the Pramac nameplate rating.
• Verify fuel: Ensure the correct fuel type is used (e.g., low-sulfur diesel for diesel models). Drain and refill if incorrect fuel was added.
• Injector service: If black smoke persists at normal load with a clean air filter, have injectors tested and serviced by a diesel technician.