Compact and easy to carry. I bought 2 of the 2550DFc generators with 50 amp parallel cable, instead of one 5000 watt to save my back. The access panels are easy to remove. It starts on first pull almost always. You do have to have fuel on, ignition on, choke on, and fuel tank vent open. Cool design features: gas tank vent can be closed to keep air out during storage, there is a carburetor drain valve with tubing, oil fill is easy by tipping the generator and screwing in the funnel with a gasket, it comes with the right- sized oil bottle.
My serial number for warranty registration is by the spark plug on a paper sticker. It is not labeled and looks different in the owners manual.
The duel fuel model does not have the electronic display of amps , fuel level, and run time. In parallel mode the manual says not to run in Eco mode; this is so the 60Hz cycles can stay synced up. I am loving mine and strongly recommend it. I hauled it around in a lawn wagon and trimmed tree limbs with a light weight 120v electric chain saw on a pole.
Purchased this to replace a 25 year old generator that generates same wattage but is twice the weight as this inverter generator. Ordered online and just got the generator today so not much I can say except I added oil and fuel and it started after a few pulls on the crank. This should operate my freezer and pellet stove should we have a power outage this winter. I selected this generator because of dual fuel feature so that I can hook up my grill propane tank if I run low on gasoline. It was nice that an actual warranty book and operating manual and maintenance guide came with this generator.
I added the oil and gas. Started on the first pull and ran great. Bought it for my small camper and the generator was able to handle all the components (furnace and air conditioner with no problem on the 30 amp circuit.
Just what we needed to help get through the hot summers day out camping. Also a relief to know that if power goes out at home we can keep the fridge and freezer running.