Question about Coleman Powermate Premium Plus 6250W Portable Generator

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Powermate 6250 model pm0545007.01 engine runs no a.c. output

Service tech said check brushes did that they are fine .tech said connect battery cable to negative on left and just touch posative cable to right side posative it produced juice for one second then quit tried it ten more times still nothing

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Need help i have a coleman powermate PM0545007.01 need a part # for the housing blower or where can i purchase one ? thanks mike arubamike16@yahoo.com

Posted on Dec 12, 2009

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You will need to install new diodes,they are located in the plastic housing behind the receptacles...It looks like little spark plugs..They work to put dc voltage to the rotor,without the exciter voltage applied,you will not get ac power out..The part number is 3483.01....You can buy these online for about $6 each,they have 2 inside the generator,and you should change both.

Posted on Dec 17, 2008

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Posted on Jan 02, 2017

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Generator does not output any power. Engine runs fine


I have the same problem and here is my troubleshooting steps I took.

1) Verified that the unit had no output with induction meter on cables coming out of top of generator head (three black and three white). You can use a volt meter too.
2) Checked that brushes were free and long enough.
3) Checked capacitor (condenser) was 130uF
4) Checked diodes

Sep 03, 2010 | Coleman Powermate Portable Generator...

2 Answers

Coleman Powermate Powerbase 4000 -no AC Need Field test procedur


Check the voltage sent to the field when running. It will probably be around 12 volts. You can try connecting a lantern battery BRIEFLY to the field to re-magnetize the field. Try bothe polarites.

Some have had a bad rectifier and one had a bad transformer that generaates the low voltage from the generated output. He had a broken wire from the winding to the wire from the transformer. He was able to reconnect the failed solder joint.

Apr 16, 2010 | Coleman Powermate Premium Plus 6250W...

5 Answers

No AC out put


After working on several of this style coleman generator,i have found that the lead wires in the windings that are soldered to where your brushes would contact tend to break.I don't know if it's a poor design or just a fluke,i would check to see if your getting continuity on the rotor and go from there.They seem to either "burn off" or just break.

Mar 09, 2010 | Coleman Powermate Powermate 5000W...

2 Answers

My Coleman Powermate 6250 generator has no power output. After the carburator was cleaned, I flashed it. A voltage meter shows there is power being generated, but none so to light a light bulb. What to do...


Take the cover off and flash the rotor again with a 12 volt battery. Positive lead goes to the top or right side brush. Negative to the other brush. Just touch it on, then remove it, and check for power at plugs.
If that doesn't do it, change the AVR (voltage regulator)

Aug 05, 2009 | Coleman Powermate Premium Plus 6250W...

2 Answers

I have a 3 year old Coleman Powermate 6250


Try this! To excite it. Shut off the generator! Unplug everything,Then use the 12 volt battery to excite it per manual. Make sure the engine is NOT running and the breaker switch is in the on position. Now with the battery 12V removed restart the generator! This should fix it if the problem is that it lost its magnetism.

Jun 08, 2009 | Coleman Powermate Premium Plus 6250W...

2 Answers

Coleman 5000 generater-no AC output


have you conected the brushes on the right way? the leads are + and -.

you can run it up and use a 12v battery and connect it to the brushes correct polarity, with the othe LEADS removed and taped can shock you and chect the out put it it around 100 120v chech the AVR or brush polarity.

If yours dont have brushes it will have a capasitor that is prob out of spec.

Jan 10, 2009 | Coleman Powermate Powermate 5000W...

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