This Generac 4000XL was left by the prior owners at a property purchased by a subscriber. It had bad fuel in the tank and in non-running condition. He cleaned out the tank and installed a new carburetor and got it up and running. Fast forward to the next outage and he connected it to his house and found his HVAC system was not happy about the power it was receiving from the generator. He tested the output and found the voltage was too high. Lets see what went wrong with the automatic voltage regulator (AVR) and fix it. I use Harbor Freight Super Heavy Duty Degreaser in my ultrasonic cleaner https://www.harborfreight.com/1-gallon-heavy-duty-degreaser-42998.html Generator Model: 09777-2 Engine Model: GN220 Visit My Amazon Store: https://www.amazon.com/shop/jamescondon Breather Tube (090947A): https://amzn.to/3XOalAu Carburetor Rebuild Kit (0C1535ESV): https://amzn.to/3RdjDUE Clone Carburetor (0C1535AESV): https://amzn.to/3XE1Jwq Electronic Silicone: https://amzn.to/3Ham2KT Molex Crimping Tool: https://amzn.to/3XDKXxI Molex Connectors (05-50-0106): https://amzn.to/401w7mc Ultrasonic Cleaner: https://amzn.to/3HyRZhu If you want to donate to the channel, you can use the YouTube "Super Thanks" feature or via PayPal: https://www.paypal.com/paypalme/jamescondonYT #GeneratorRepair #SmallEngineRepair #SmallEngine #DIY #Fixed #Troubleshooting #HowTo #Generac 09777, 09777-2, Alternator, Auto Idle, Beacon, Fixed, GN220, Generac 10000 EXL, Generac 3000 XL, Generac 3500 XL, Generac 4000XL, Generac 5500 XL, Generac 7500 EXL, Generac 7550 EXL, Generac EXL, Generac XL, Generac, Generator, Governor Reset, Hertz, High RPM, How To, How-To, Idle Adjustment, Leaking Gas, Load Test, Megaforce, MityVac, Molex, Oscilloscope, Overvoltage, PCB, Power Control Board, Repair, Running Fast, Running Slow, SCB, Set Engine Speed, Sinewave, Small Engine, System Control Board, THD, Tank Bushing Replacement, Total Harmonic Distortion, Troubleshooting, Voltage Too High, Volt

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