Where do you start?
Boys have a Honda 2000 and they were packing for an elk trip and the Honda went on vacation too. They got a Dewalt and away they went.
What could be the problem?

I am no help, I pull the rope on mine a couple times and she fires up and runs like a clock. Try the Google I guess.

I have rebuilt a couple. More details?

Did it sit along time with crap gas ?

Motor won't start or no output at the plug?
If it's no output, sometimes if the gen sets for a while the magnets get weak.

Open the air vent on the gas cap.

Engine runs, just don't make juice.

I'll look into it tomorrow. I'll tap it with a tune-up hammer first thing.

It is September now so an 8 pounder is the minimum legal weight.

Turn it off and then back on. Sorry, couldn’t help it. And yeah the tune up hammer would have been my first suggestion but you were already there.

8# is the smallest I keep around so I'll start there.
It might been used too much when it was new.

Following this because that quiet little gen is the one i was thinking of buying for my wife to. Use for her events in the summer to run lights and a fan

I highly recommend Predator by Harbor Freight
Started by a guy that left Honda and started his own company. Uses same parts as Honda at half the price.

check for a reset button?

What about Generac? It's made in America.

Plug in an electric drill.

Need to excite the electro gizmos inside to re-energize the field.or something like that.

Really does work

ETA
You've lost residual magnetism

ETA2

Electric Drill Method
This is a super easy method for testing if it is the loss of residual magnetism that is causing your problem. Even better, if your theory is right it will fix your generator in the process.

Plug an electric drill into the receptacle of the generator. Make sure that you have the drill in a forward position. Press down on the trigger of the drill.

Now, start your generator. Then start to release the drill’s trigger. You want to be spinning the drill’s clip in reverse.
If the problem is with loss of residual magnetism then doing this will wakeup the magnetic field in the generator. The drill will turn on and start spinning. The generator will now produce power.

If this doesn’t work, try spinning the drill in the other direction. You may have your reverse switch positioned backward.

Tip – Make sure that nothing is attached to the drill bit when doing this method. The drill will turn itself on as soon as the generator’s field is woken up. It will start spinning, as will anything else attached to the drill bit.

Tip – if this does not work you should try replacing your Automatic Voltage Generator. As that is the next most likely cause of your problem.

I haven't looked at it myself but I will today.

What about it? Don't think there's a dealer in town and I wasn't aware they made a 40# 20000 watt generator but it's worth looking into.

Thank you! Very informative. I'll try to find an electric drill that is corded. It's been a long time.

Try this: https://www.youtube.com/watch?v=5Fk1AgrOUjs