PRO-SERIES 5,500/7,000-Watt Quiet Diesel Powered Contractor Generator-GENSD7 - The Home Depot


Model # GENSD7

Internet # 100660521

5,500/7,000-Watt Quiet Diesel Powered Contractor Generator

PRO-SERIES 5,500/7,000-Watt Quiet Diesel Powered Contractor Generator

This item has been discontinued.
The Home Depot no longer carries this specific product.

$1,449.00 / each
  • Rated Voltage: 120V / 52.5 A; 240V / 26.25 A
  • Engine Noise Level: less than 70 db
  • 120V/220V Voltage Selector Switch


Model # GENSD7

Internet # 100660521

The Pro Series Diesel 5,500/7,000-Watt Generator is ideal at the job site to power tools and equipment. Its equipped with two 120-Volt outlets, a 120-Volt twist lock outlet, a 120/240-Volt outlet and a 12-Volt DC terminal for battery charging. With a full load of 5,500 running watt and 7,000 surge watt this generator can run for up to 7 hours and runs on readily available diesel fuel. The Automatic-Voltage Regulator controls power output so tools wont be damaged by power fluctuations. This unit is designed for Pros with features like an eye hook to hang from cranes and scaffolding, and is engineered to run for long periods without too much noise or overheating. Engine noise level is less than 70 db, quite enough to work around all day long. Its also easy to maneuver with the four installed wheels. Other pro features such as an automatic low oil shutdown, heavy duty housing and electric start feature make it ideal for contractors. A lawn tractor battery (not included) must be installed to use the generator's electric start feature. Consider using a riding lawnmower battery with a minimum of 360 CCA (Cold Cranking Amps). The Unit requires 58 ounces 15W-40 Diesel Grade Oil to operate.

  • Two 120-Volt 25 Amp outlets, one 120-Volt / 240-Volt 25 Amp outlet (twist lock) and one 12-Volt 8.3 Amp DC connection with ground
  • Includes wheels for mobility and eye hook for hanging from cranes and scaffolding
  • Runs on diesel fuel, 4 gallon fuel tank capacity, runs for 7 hours with a full load
  • Electric start system (12-Volt battery not included but readily available at Home Depot or wherever 12-Volt riding lawnmower/motorcycle batteries are sold), Battery Specs: Max, 7 3/4 in. L x 5 1/4 in. H x 7 in. W, 360 minimum CCA (Cold Cranking Amps) any brand with similar specs may be used, the battery may be smaller in size, and have a higher CCA
  • Self excited, 2 pole, single phase, AVR automatic-Voltage regulator, automatic low oil shutdown
  • Single phase 9 HP engine
  • Rated frequency 60 Hz/Rated output 6.3 kw, rated-Voltage 120/240-Volt/Max output 7.0 kw, rated current 19.2 Amp/Power factor 1.0
  • Max operating height above sea level 3,280 ft., max environment temp 104 Deg F
  • Weight 392 lb. size: 37.8 in. x 21.8 in. x 30.7 in.
  • EPA Approved
  • The Unit requires 58 ounces 15W-40 Diesel Grade Oil (Not Included) to operate
  • Click on the “More Info” tab to download the specifications pdf to view the -Wattage requirement guide
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.)  35.75 in  Assembled Height (in.)  27.75 in 
Assembled Width (in.)  20.25 in  Product Height (in.)  29.0 
Product Length (in.)  37.5  Product Width (in.)  22 
Auto idle control  Yes  Automatic Voltage Regulation  Yes 
Built-in inverter  No  CA (CARB) Compliant  Not CARB Compliant 
Continuous Wattage  5500  Engine Displacement (cc)  418 
Engine Make  OEM Branded  Fuel Gauge  Yes 
Fuel tank capacity (gallons)  4.0  Fuel type  Diesel 
Full load fuel consumption (gallons/hour)  2.0  Horsepower (hp)  9 hp 
Low oil shutdown  Yes  Muffler  Yes 
Number of circuits/outlets  Operational volume (dB)  69 
Osha Required GFCI Outlets  No  Peak Wattage  7000 
Product Weight (lb.)  398 lb  Returnable  30-Day 
Run time at 50% load (hours/tank)  Voltage (volts)  120/240 
Wheel Kit Included  Yes 
Warranty / Certifications
Certifications and Listings  1-UL Listed  Manufacturer Warranty  1 Year Limited 


Rated 3.6 out of 5 by 27 reviewers.
Rated 2.0 out of 5.0 by NOT HAPPY Purchased but not used right away, had to find a battery to fit. When it worked it worked great. Within 40 days of purchase and very little use, the outlets no longer worked and fuel is leaking somewhere. Waited another two weeks of trying to reach someone that can tell us where to take it for warranty work, and when we dropped it off (not very easy given the weight) they said that shipping parts are not always covered under warranty and had to provide a deposit. Really? You made the defective machine. Waiting now to see if they can fix it. Use your machine within the 30 days return policy for the store, that way they can deal with the manufacturer if it breaks. Hope I get it back before summer is over, the whole reason for buying it in the first place. July 23, 2013
Rated 1.0 out of 5.0 by new, will not start ! Lots of good points but the big strike against this is that mine will NOT even puff or fire AT ALL. Only ran it three times and at first it was o.k., but did smoke a LOT until warmed up. It is dead today, even after 2 hours on the line with ''help line'' doing all sorts of experiments that I hoped to AVOID with a NEW unit ! To make it worse, the first one arrived DAMAGED by the shipper September 4, 2013
Rated 5.0 out of 5.0 by This Generator Runs Everyday for our Excavating Business Flawlessly We have owned this for a year and a half. It powers our bulk refueling station which we use to refuel at the end of every day. Whether it is 90 or -10 degrees outside it starts and performs flawlessly day in and day out. We actually plan on purchasing additional units to run more refueling stations. Reading the reviews, this unit may not be what your looking for if you do not intend to use it frequently, but if you plan on running it all the time, this has given us no problem. February 6, 2015
Rated 5.0 out of 5.0 by Great Value! Excellent operation!! I wanted to take a moment to express our satisfaction with this product and with Buffalo Tools in general. We are a manufacturer of equipment and needed a diesel generator offering on one of our products. We were having issues with finding units small enough to be affordable to our customers. That is when we found the Buffalo 7000 Watt Generator. We reached an agreement with Buffalo to purchase as an OEM and our customers have never been happier. We even replaced some of our older units with lower quality generators with the better and more efficient Buffalo unit. We also use the propane unit. Their customer support and dealer support system is second to none. Working with Tyler was a great deciding factor in choosing to stick with the Buffalo units as he stayed on top of our concerns and really pushed hard for us to get the OEM line so we could offer the warranty to our customers. We Highly recommend Buffalo Tools for your diesel and propane operated generator solution. - Separation By Design, Inc February 9, 2015
Rated 4.0 out of 5.0 by Good I have had no problems with it just turn the key and go February 3, 2015
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Curbside Truck Shipping (By Appointment) includes delivery to receiving area/dock for businesses or curbside for residential orders. The carrier will contact you to make a delivery appointment with a 4 hour window once the items have arrived at the local hub in your area. Delivery appointments are required.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.