I have a brand new honda 3000is generator. I accidently added too much oil and gas. (I filled according to the capacity in the manual, however both the oil and fuel overflowed while filling). I cleaned the mess and the generator ran but smoked profusely. After draining some of the fuel and oil. It will not start at all. Did I damage it or is there something I need to do to make it work now?

If you filled the fuel tank with gasoline enhanced with ethanol the fuel may be bad and caused the carburetor to gum up. Also Honda engines have a low oil sensor and from your description of the oil, can cause problems with the sensor and the engine won't start. Try changing the oil first and then adding a small engine gasoline additive that helps with stale gasoline starting problems.

http://www.geotechenv.com/Manuals/Honda_Manuals/EU3000is.pdf

Overhaul the carb. When you have to choke it to run, there is not enough fuel getting in

In the process of using diesel generator set, soft rubber pipe is easy to rub with the parts around it, and it is easy to wear and tear oil leakage in the long run. However, most of the fuel supply system of diesel generator set uses soft rubber tube, so it is not easy to find the oil leakage point. Below are instructions provided by Starlight Power small make up to teach you a few diesel generator unit pipeline leak spot check method.

Method one: exhaust the air from the diesel generator unit, then start the unit to find out the leak point.

Method two: release the gas screw of the unit injection pump and release the oil from the hand oil pump. If it is found that the discharge screw starts to discharge a large amount of bubble oil, and the bubble still does not disappear after the repeated hand pump, it can be determined that there is a leak point in the low pressure oil pipeline from the oil tank to the oil pump section. The pipeline should be removed, pressure gas and placed in water, to find out where the bubble is the leak point.

1995 HONDA ACCORD 2.7L 6-cyl Engine Code C27A4 C27A1

Engine Oil Grade 1......API All TEMPS......5W-30
Manual Transmission,......SJ All TEMPS......10W-30, optional 10W-40
Automatic Transmission,MPZA......AF2

CAPACITIES:
Engine, with filter..........4.4 liters
Automatic Transmission, MPZA Initial Fill..........2.7 liters
Automatic Transmission, Total Fill
4 speed MPZA..........6 liters
Manual Transmission, ..........1.9 liters

1995 HONDA ACCORD 2.2L 4-cyl Engine Code F22B1 VTEC

Engine Oil Grade 1......API All TEMPS......5W-30
Manual Transmission,......SJ All TEMPS......10W-30, optional 10W-40
Automatic Transmission,A0YA......AF2

CAPACITIES:
Engine, with filter..........4.3 liters
Automatic Transmission, A0YA Initial Fill..........2.4 liters
Automatic Transmission, MP0A Initial Fill..........2.4 liters
Automatic Transmission, Total Fill
4 speed A0YA..........6 liters
4 speed MP0A..........6 liters
Manual Transmission, ..........1.9 liters

Use fresh gas! Dont just pour some on top of the old...Change it out.

Drain the carb bowl (Honda carbs have a drain screw slightly off-center of the bowl bottom).

The Honda EU3000is uses a vaccuum-operated fuel pump and old gas will ruin it also.

Take the fuel supply line off the carb inlet, direct it in a container and spin the engine over. It should pump a stream that is FULL LINE DIAMETER.

If still no start, take it to an AUTHORIZED Honda Power Equipment Dealership.
Find one here.

Hope this helps.

The battery is behind one of the end plastic casing pieces. You have to remove the center plastic panel, then remove the bolts holding the handle in place, and then remove the small, lower metal panel. I don't remember if it is on the side where the exhaust opening is or not, I believe it is on that same side.

First problem is caused by the new generator producing too high a frequency... 65 Hertz is above the inverter limit. Adjust the governor down to 60 or 61 Hertz.
Breaker tripping may be due to excessive current draw from the Honda. Check the max AC input menu on the inverter. It might have been set lower to avoid overloading the original generator but if DC power was turned off at any time while you were changing generators, the inverter would have returned to it's default settings which may exceed the Honda's capacity.

turn the fuel off when not in use,it is going through the carb.to the oil.

About 4.5litres and that includes oil filter If filled from totaly empty