STF9375 Tri Fuel Generator 9375 Watts


Tri Fuel generator 7500 running watts 9375 starting watts, Honda engine GX390; Runs on natural gas, propane (LPG), and gasoline; Includes battery, battery charger, wheel kit, and Drainzit for easy oil changes without the need for tools; 8 gallon fuel tank; 2 Year Smart Generator Limited Warranty.


In stock


STF9375 Tri Fuel Generator 9375 Watts

Within the family of generators we carry with Honda engines, the price point on this unit makes it very popular. The STF9375 tri fuel generator 7500 watts is a great choice for a homeowner looking to power up a couple window air conditioners, heat, microwave, lights, entertainment center, computers, refrigerators, etc.

  • Model STF9375
  • 11.7 HP Honda GX390 OHV Engine
  • 8 gallon gas tank that runs up to 12 hours on 50% load
  • Tri fuel generator 7500 watts, 9375 starting watts
  • Compatible with 30 amp manual transfer switch
  • Run time on LPG (Propane) up to 20 hrs at 50-percent load per 40 pound fuel tank
  • Natural Gas requirement: 120,000 BTU per hour
  • Output is derated 20% for natural gas
  • Electric/Recoil Start
  • 4 x 120-volt 20-amp and 1 x 120/240-volt 30-amp twist outlets
  • The AVR (Automatic Voltage Regulator) system provides the precise voltage control output necessary to power your sensitive electronics like computers
  • Low oil shutoff
  • Decibel Level (db) 75
  • 221 pounds
  • 31.25 inch (L) x 20.625 inch (W) x 24 inch (H)
  • Battery (with Battery Tender) and Wheel Kit Included
  • CARB approved for California
  • 2 Year Smart Generator Limited Warranty

It is easy to adjust the load block from LPG to Natural Gas.  The load block on your generator’s was tuned to 11 wc at our shop, perfect pressure for our LPG hoses.  Before running on Natural Gas give us a call and a tech will teach you how to adjust the load block over the phone.

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Author Rating
2 based on 69 votes
Brand Name
Smart Generators
Product Name
STF9375 Tri Fuel Generator
USD 1999.99
Product Availability
Available in Stock

Additional information

Weight 221 lbs
Dimensions 31.25 x 20.625 x 24 in


Engine Brand

Starting Power

Running Power


  1. (verified owner)

    I wanted to purchase a back up power generator for my Texas home. The floods etc. were most difficult to cope with the resultant power loss. I found “Smart Generators” on the web and contacted them for advice on such a purchase. Mr. Jared Katz and I spoke and he was so kind on the telephone. He answered all my questions and I made the decision to order the STF9375 Honda Tri-Fuel Generator. It arrived in PERFECT CONDITION. It was relatively simple to put the wheels on, the handle bars and front “feet”. The instructions were well done but I still had some questions which Jared and Shaun were more than happy to answer. This is a QUALITY GENERATOR thru and thru, relatively simple to operate and I believe the Honda brand name is total reliability! Jared also suggested I order the dual propane tank Series (LPG) Kit with auto switchover. It also is quality, simple to put together, works like a charm. I also ordered the Transfer Switch Cord Generator Extension Cord 30 amp and the Generator Pigtail Adapter 50 amp. Again, all items came quickly and in perfect condition with high quality! Every advertised item on their website was as expected when it arrived and to sum up my impression of this company and their products! S E E K = Service Excellence with Exceptional Kindness way above my expectations in every way. It is a company of high integrity with the motto: “We will make it right because that is what our customers expect”! 5 stars!! I would recommend this company and their products to my family and friends without question or reservations. I hope this review isn’t too long but I wanted to let prospective customers know just how much your company and you and Shaun impressed me. I will be getting in contact with you very soon for another order Jared, the unit you sent me an email about yesterday! Warmest personal regards, Steve

  2. (verified owner)

    I recently had my service upgraded and decided at that time to add a transfer switch and external power inlet to connect a backup generator. My electrician suggested to go with a NG unit rather than having to store gasoline. I agreed and had a plumber run a new gas line through the house ending with a shutoff valve outside. Shopping to find a NG generator seems to be a little difficult until I came across the nysmartgenerator website. I called and discussed my needs with Jared originally and it was a very pleasant conversation. He answered all my questions and concerns and even offered to hold the sale price for this unit, STF9375, past the end of the sale date.
    When I ordered the unit I talked to Shaun who was just as helpful as Jared. I ordered the generator, 30 amp cable and Natural Gas hose with quick disconnect kit. All parts arrived well packed and in good condition as scheduled. I added the quick disconnect to the gas shut off valve and the other end to the regulator on the generator. Then I called Shaun again to find out how to change the load block from LP to NG. It sounded easy enough, just back up the adjustment screw in the load block. Since this was my first experience with any generator it took my some time to get to the right adjustment. But finally the unit started and is now running and starting reliably. I am very happy with my purchase.
    Due to the location of the regulator between the handle bars it is difficult to move the generator with the NG hose connected. I called Shaun again and he sold me a second quick disconnect to add to the other end of the hose. Now I can move the generator into position, plug the hose into the regulator and the other end into the gas line at the house and the unit is ready to run, no tools needed.
    I would recommend the company to anybody (already told my electrician to pass the information along to other customers) and based on internet research I believe the machine should give me reliable back up power for years to come.

  3. (verified owner)

    I purchased the STF9375 generator, 15′ gas hose, and generator cord. The customer service is excellent. The generator runs great… it is louder than I expected and I plan to add the muffler that is advertised on this site.

  4. (verified owner)

    It has been nice doing business with you.

    5 out of 5 stars for the generator. It is well made and easy to use
    5 out of 5 stars for the gas line. The quick connector is heavy duty and well made also
    5 out of 5 stars for the electric cord too.

  5. (verified owner)

    I am very happy with your customer service and the products. I got the Reliance Transfer Switch fired up my STF9375 Tri Fuel Generator using propane turned on every light and appliances and even my AC it took the load with no problems. It is loud I have close neighbors so I am going to build a sound box changing out the muffler wouldn’t be enough. I want my sound box to look like my garage so I going to use the same exterior material as my garage and line it with sound proofing material. Yes I will get a louvered fan and build it so it has extra room for the heat.

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