Equipment Guide · Safety-Critical
Diesel generators supply temporary and standby power for job sites, events and outages. Because they involve fuel, high voltage and exhaust, safe setup matters as much as operation. This guide covers the essentials — always follow the unit's manual and the guidance Allied provides at delivery.
Safety first: This equipment can be hazardous if operated incorrectly. This guide is a general overview — always follow the unit's manual, use proper PPE, and contact Allied Rental Company's team for hands-on guidance. It does not replace professional training.
Place the generator outdoors on level ground, exhaust pointing away from any building, with clearance on all sides for airflow and service. Ground the unit per the manual and local code.
Confirm engine oil, coolant and diesel fuel levels before starting. Look for leaks or damage. Allied delivers units serviced and ready, but always verify.
Have a qualified electrician connect your load or transfer switch. Never plug a generator into a wall outlet ('backfeeding') — it's dangerous and illegal.
Start the generator with no load, let it reach operating temperature, then apply your load gradually.
Watch gauges (voltage, temperature, fuel). Keep it fueled — see our fuel delivery service for long runs. Don't overload beyond its rated capacity.
Remove the load first, let the engine run briefly with no load to cool, then shut down.
Allied Rental delivers, sets up and supports across the San Francisco Bay Area — and our team walks you through safe operation.