I have a Coleman powermate vantage 3500 it would start up fine and run for a hour then just die like you shut off the fuel, go and restart it and it would run prefectly for a hour. Also I need pn# f

SOURCE: generator will start and run easy, then just die.

Check for loose wiring connections, especially at the run or kill switch. Generators vibrate a lot so it could be as simple as something loose.

SOURCE: I have a Coleman Vantage 3500 motor runs no generator output

This sound like a loss of residual magnetism in the generator. The field will need to be "flashed".This is also known as re-exciting the field of the generator.
The Coleman manual gives these steps:
1Use a 6 Volt lantern batters (dry cell) or a 12 Volt automotive battery.
2.Disconnect all loads from generator.
3. Remove the brush cover (that's the rectangular plastic cover on the end of the generator.)
4. Plug a lamp or light into the generator before starting the engine. The light will illuminlate when ?Voltage has returned.
5. Start the engine with no load connected to the generator.
6. Attach the "-" lead of the battery to the negative brush. Very briefly touch the "+" lead of the battery to the positive brush. Remove as soon as Voltage builds up.

SOURCE: have a coleman powermate 5000. Won't start. Laid

Cleaning the carb bowl is not enough make sure you pull out the main jet and clean it out real good. If it starts with starting fluid then it is definitely a fuel problem.

SOURCE: cant start coleman powermate vantage 3500

Pull the spark plug and see if it is wet or smells of fuel. If not, then may have issue with the carburetor, fuel filter, float, etc. If plug appears fouled, replace the plug with new one correctly gapped. I have found that one can put an UNLIT propane torch into the carburetor and try starting. The propane won't flood the engine and can give an indication if the ignition is working. If the engine tries to start on the propane, then carburetor work is in order. Usually a problem with the float. Fuel filters and the embarassing thing of forgeting to turn on the fuel valve are farther down the list.

SOURCE: 10 hp briggs and stration

A friend gave me a Coleman powermate generator model # pmo545208. I discovered that it had no spark , well it still does not due to lack of time but any way i have been looking for a owners manual online for about 3 to 4 weeks and from what i see so are a lot of other people just like you Sir and myself well may I say to you and all else who are seeking the same as i was LOOK YE NO MORE.simply call the company that took over POWERMATE when it went bankrupt some years ago but kept thier name and phone number.That company is PRAMAC. the phone number is 1-800-445-1805 i think they are located in the eastern part of the US. but anyway i had an owners manual,a operators manual and a operating and maintenance manual in just seconds.You will need a PDF reader or unlocker to view them , may i suggest opening before burning to a disc or printing .Anyway have a nice day and HAPPY NEW YEAR JAMES NEWMAN