This a Winco 20,000 Watt unit, it has been used vary little. It has a new regulator and propane hose and muffler. It has a 40 HP Wisconsin Engine. We test ran it, the output is perfect. It was tested by a Certified Electrician. Runs Great and does not smoke. It can run on Natural Gas in 5 minutes with nothing to buy. I will Guarantee this Generator to Run and Charge as it should.  We will install the male or female plug in at no cost to you( you furnish it). This is a Commerical Unit not a Cheapo. You can contact me or Don Younger (Dons's Electric and Rewind), he is the one that done the work on it and tested it out. Don has the unit in his Possesion. Don' s  Number is 785-635-0600.  $2,000 Or Best Offer