My powermate 5000 will not idle. It rpms up then rpms down and when I use a small tool it almost cuts off and backfire constantly. I changed the oil and the plug Help
Check that the choke isn't stuck...should be a small curved pin you slowly pull in and out. Check your manual for its location. If its stuck in one position that could be your problem. If you can't find your manual, do an online search; usually you can download one.
SOURCE: What type of oil for a Coleman 5000 Generator?
You need a quart of regular old SAE 5W30 motor oil with detergent.
The engines on these generators are more or less the same as a lawn mower.
Don't forget to service/change the air cleaner when you change the oil, that should keep your generator producing full power.
Regards,
Carl
SOURCE: I need a manual for the 5000 generator.
Go to www.colemanpowermate.com, click on portable generators,click on manuals at top of page.
you will need to know the exact model #, look on black plastic cover on the back of the generator.
SOURCE: Coleman Powermate 10 HP Generator shuts down after a few minutes.
I have an HM100 on a 5500 watt gen with the same problem. This motor calls for a J17 spark plug, but I found using a J19 (hotter) plug solved the problem. I think the J17 doesn't get hot enough for a complete combustion burn so it act like fuel starvation thus resulting in the black sooty and wet plug.
SOURCE: my generator is only putting out 2.5 volts it is a
Most likely the excitation DC circuit is broken or exciting rectifier (AVR if present) is damaged. If the field has been demagnetized it can be recharged by a 12 V battery, connected for a short time to +, - of the excitation winding, with engine running.
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sunds like it is surging, usually means main jet in carb is plugged
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