The Importance of Generator Maintenance

Protect the equipment that protects your business or family.  Generators, like all mechanical equipment, need preventative and corrective maintenance.   Oil and filter changes, cleaning (inside and out), testing and calibration, all by a trained eye, should be a part of the annual maintenance of your generator.  Failure to do so will absolutely decrease reliability and void your manufacturer warranty. Sutfin Mechanical, Inc. can handle all of your residential, commercial, and industrial generator maintenance and repairs. Call us today at 815.609.9000 to find out more about our comprehensive maintenance plans.


Service Department Highlights:

  • Residential, commercial & industrial capabilities
  • 24/7 Emergency response
  • Factory & rigorous in-house training
  • Servicing all major brands
  • Flat rates for most standard repair services


Your generator may run fewer than 24 hours in a year, but after a major storm that knocks out the power they can be invaluable. Make sure your generator keeps you protected all year long by calling  Sutfin Mechanical, Inc. for generator maintenance.  We can service your generator so it's ready to go at a moments notice and will last until the power comes back on. Your generator should be inspected twice a year to ensure proper operation, so if you want to keep the lights on when a summer or winter storm knocks them off, call Sutfin Mechanical, Inc.

If you need generator maintenance, call Sutfin Mechanical, Inc. today 815.609.9000 or click here to contact us online.

Generator Maintenance Checklist

Because generators need to be at the ready 24/7, generator maintenance involves much more than just lubricating the moving parts and changing the oil filter. A full generator inspection includes the following steps:

  • Check and record battery voltage
  • Load test battery
  • Rehydrate battery, if needed
  • Check for errors (LED indicators)
  • Check and record gas pressure (stand-by and running)
  • Check transfer switch for proper operation
  • Clean air pre-filter
  • Check oil level and check for leaks
  • Set exercise time
  • Check all fuses and breakers
  • Check electrical wiring (control and main power)
  • Check and record generator output Hertz
  • Check and record volts under load
  • Load bank test (optional)

Name: *
Email: *
Phone: *
Type: *
Interested In: *
 Water Heater 
 Sump Pump 
 Electronic Air Cleaner 
 HEPA Air Cleaner 
 UV Light 
 Air to Air Heat Exchanger 
 Attic or Whole House Fan 
 Air Conditioning 
 Heat Pump 
 Residential Maintenance 
 Commercial Maintenance 
 Electrical Service Upgrade 
 Stand by Generator 
 Roof Top HVAC Unit 

Please choose two days and times:

Monday - Friday 8:30AM to 3:00PM
First Choice: *



Second Choice: *



Acknowledgement: *
 I acknowledge this form is not for same day visits. Once received, the office will contact you to confirm. 
Coupon Code:
Image Verification
Please enter the text from the image:
[Refresh Image] [What's This?]