DuroMax XP4400EH 7 HP Dual Fuel Propane/Gas Powered Portable Electric Start Generator, 4400-Watt

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Price: $649.99 

Product Feature
- Rated ac output: 3500 watts; max ac output: 4400 watts
- 120 Volt 20a 3-prong outlets; (1) 120v/240v 30a twist lock
- Durable durostar 7.0 hp, air cooled with low oil shutoff
- Designed to run on gasoline or propane for maximum convenience
- Full power panel with engine shutoff switch, volt meter, circuit breaker and power outlets
Product Description
The Duromax XP4400EH has a dual fuel system that operates on either standard gasoline or cleaner burning liquid propane which can more than double you generator's run time. With the XP4400EH, operating on propane will not gum up or foul your generator's carburetor and will give you quick, reliable starts every time. It only takes a few seconds to switch over from regular gas to propane and with the flexible line, you can easily hook up any size propane tank including the one from your barbeque.
DuroMax XP4400EH 7 HP Dual Fuel Propane/Gas Powered Portable Electric Start Generator, 4400-Watt Review
I just received this generator a few days ago. The packing was fine and there was no obvious damage. Once I began to assemble the unit, I noticed a couple of annoying problems:
1. One of the battery terminal screws was missing. I replaced this with one of my own.
2. The bolts/nuts provided for attaching the handles are totally inadequate. no amount of fudging or tweaking allowed the handles to be attached with the provided hardware. I replaced with my own.
3. The wheels don't fit that well and do not appear to be very study. When installed and righted, they bow outward at the base and the metal collar is clearly out of round.
4. The manual was essentially written for a somewhat different model generator.
5. Discoloration, dirt, and other undesirable elements were evident in the finish of some components.
Overall impression of build quality was "poor".
I decided to start the unit up using a BBQ grill propane tank. I followed the instructions, but noted immediately that the electric start did not work. Indeed, the starter never budged AT ALL. The manual claims that the battery may come partially discharged and that running the unit for "a few minutes" will charge the battery sufficiently to allow the electric start to work. IT DOES NOT. in fact, running the unit for 1 FULL HOUR did not rectify the problem. Either there is a wiring problem, the battery is bad, or the starter is bad.
While running, the engine will randomly sputter. Again the manual claims this should resolve in a "few minutes". IT DOES NOT. Putting the unit under load (an electric leaf blower) DID however rectify the engine sputter, until the appliance is shutoff, at which point, the sputter resumes.
*UPDATE: After talking to customer tech support they stated that the engine runs RICH on propane which they say is necessary. That would explain why the engine quits sputtering under load.*
I have not yet had a chance to test it under 240V loads.
So here are a couple of questions: WHY ALL THE 5 STAR REVIEWS?? The build quality of this generator is clearly very poor. I don't like the idea of dropping $650, replacing hardware, struggling with ill-fitting components, and then have the starter fail to work. Yes, I realize there is a pull rope, but I did PAY FOR AN ELECTRIC STARTER. My next step is to determine what the problem is with the electric start, and after that, contact "customer service" to see if anyone responds. Then test out the 240V load at some point. I will update when I know more, but for now I give this unit 3 stars based on my initial evaluation of the product, and the good customer support I've received thus far.
My advice for those of you shopping for generators and considering this unit: CALL CUSTOMER SUPPORT IF THERE IS A BUILD QUALITY ISSUE. Ask them to provide a resolution without cost to you, and make sure you TEST YOUR GENERATOR THOROUGHLY when you first receive it. Build quality issues need to be identified up-front and addressed with the seller, who informs me is also the manufacturer (actually they have them manufactured in PRC and import them). If you wait and find the problem later, it could be erroneously attributed to wear-and-tear, or might occur after the warranty has expired.
UPDATE #1: I've confirmed that the battery is not the problem. After checking the voltage, applying a light trickle charge, and rechecking, the battery has ample voltage to at least turn the starter over, and it does not - not a sound, not a whisper. I have reviewed the seller's return policy, and generators cannot be returned once they are removed from the packaging. Also, any return shipments to this seller, even if defective, are the responsibility of the buyer - shipping and insurance. On heavy items, this is cost prohibitive. Moreover, this seller charges for shipping and handling to send replacement parts on a new and defective unit? Unbelievable. I have contacted the seller as it is supposed to provide warranty service for this generator. We will see what happens.
UPDATE #2: I've determined the problem is a bad starter solenoid. I did this by successfully jumping the starter. So there isn't a wiring problem or a battery problem.
UPDATE #3: One call to Factory Authorized Outlet and they agreed to send along a replacement solenoid unit at no charge. They were quite easy to deal with. Second call was from the seller, to confirm solenoid was being express shipped, and also to inquire as to my comments here regarding build quality. After discussing the wheels, they have offered to send replacements at no charge. Once I have the replacement parts and they are installed, I will update and revisit my review. I would say that Factory Authorized Outlet has been very good thus far at addressing issues.
UPDATE #4: Received the solenoid and replaced it (this was a little tricky). In order to access the solenoid screws properly, I had to remove the battery. Once in place I discovered to my horror that the unit still did not start! There is a single wire coming from the solenoid up into the main panel which is connected to the ignition switch. I carefully removed the main panel (attached by 4 bolts and checked the wire. Sure enough, it was loose and shorting out. After adjusting, it now starts (finally) using the electric start. The wheel replacements have shipped, and I will report back once I have those.
UPDATE #5: Received and installed the new wheels. The collars and axle mounts are of better quality and tighter tolerance than the ones that came with the original. The result? The wheels no longer bow-outward and the generator now appears to be properly supported.
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