Generator Inspection Form
The generator pre-purchase checklist, ready to fill in at the generator. Pick the type, work through each section, and download the report when you are done.
Generator inspection form. A pre-purchase checklist written for generators: 48 to 55 points across 9 sections. Mark each item Pass, Attention or Fail, add notes and readings, then download the report.
At a glance
- Standby, portable, towable
- Hours, load test, voltage and frequency, transfer switch.
- Downloads as a PDF report or a CSV
- Free, and nothing you type leaves your device
- Data plate, hour meter and service records
- Engine, starter battery and charger, and the fuel supply
- Generator end: bearings, regulator, breakers and receptacles
- A load test with voltage and frequency, loaded and unloaded
- On a standby set, the transfer switch: transfer, retransfer and the exerciser
- Enclosure, safety shutdowns, and the trailer on a towable unit
Want it inspected by someone who does this every day? The generator & power equipment inspection page explains what we check and how to book. Need a different form? Every one is on the inspection forms page.
Generator and Inspection Details
Fill in what you know. Anything left blank prints as a dash on the report.
Data Plate and Records0 / 8
- Model and serial plate: kW, voltage and phase
- Engine serial number
- Hour meter works
- Manufacture date
- Service records: oil, filters, valve adjustment
- Install permit or inspection (standby)
- Emissions label
- Manuals
Engine0 / 11
- Oil level and condition
- Coolant and block heater (liquid cooled)
- Leaks
- Belts
- Air filter
- Spark plugs or glow plugs
- Fuel lines and regulator
- Diesel tank: water, sludge or growth
- Exhaust and muffler
- Starts cold
- Starter battery and charger
Readings
Generator End0 / 8
- Bearing noise
- Brushes and slip rings, if brushed
- No burnt smell from the windings
- Voltage regulator (AVR)
- Output breakers trip and reset
- Receptacles and GFCI (portable)
- Neutral bonding, floating or bonded
- Terminals tight, no discoloration
Readings
Load Test0 / 7
- Voltage and frequency with no load
- Voltage and frequency under load
- Voltage recovers when load is added and dropped
- Frequency steady, no hunting
- No smoke or surging under load
- Runs 30 minutes under load without overheating
- Phases balanced (three phase)
Readings
On a 60 Hz unit, expect close to 60 Hz under steady load. A load bank gives the truest test; house load works if you note what was running.
Transfer Switch0 / 7
- Transfers when utility power is shut off
- Retransfers when utility returns, then cools down
- Exerciser schedule set and runs
- Controller alarm history clear
- Contacts and lugs, no burning
- Load shed modules, if fitted
- Enclosure and labels
Readings
Enclosure and Mounting0 / 7
- Enclosure rust, doors and latches
- Rodent nests
- Pad level, clearances to windows and walls (standby)
- Fuel sediment trap (gas)
- Vibration mounts
- Frame, wheels and handle (portable)
- Fuel tank and cap
Trailer0 / 5
- Trailer frame and coupler
- Lights
- Brakes and breakaway
- Fuel containment, double-wall tank
- Lifting eye
Controls and Shutdowns0 / 7
- Control panel and display
- Auto start
- Emergency stop works
- Low oil pressure shutdown
- High temperature shutdown
- Overcrank protection
- Meters read correctly
Tires and DOT DatesAge from the DOT code
The last four digits of the DOT code are the week and year the tire was made, so 2319 is week 23 of 2019. Rubber ages whatever the tread looks like.
| Position | DOT date | Age | Tread | PSI |
|---|---|---|---|---|
| Left | – | |||
| Right | – | |||
| Left axle 2 | – | |||
| Right axle 2 | – |
Additional Comments
Inspector Sign-Off
Generator professionally inspected and reported by
Download the Report
Every item, note and reading goes into the report. Download opens it ready to save as a PDF or print. Your answers stay on this device until you clear them.
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