Question about Coleman Powermate Premium Plus 6250W Portable Generator
New generator, purchased last year, used for the first time this weekend. (Major Ice storm in NH)
It starts and runs with full choke, but dies with choke off. It will run all day with the choke on or the airway other wise constricted.
Checked plugs after 18hrs of operation w/full choke and the spark plug looks clean, dry and grey...
Suspect carb is adjusted too lean, or not jetted correctly for operation in cold temps <25 deg f.
Problem: no apperant fuel mixture adjustment on the carb (subaru/robin Engine).
Any assistance would be greatly apprecated, thanks in advance.
A call to Elliott Small Engine solved my problem - Oil Guard. I had checked the oil and it was just a little low but seemed well within the normal range. I was told to add more, bringing it just over the Full mark. It seems that the low oil protection system is very sensitive and shuts down the engine even when the oil is withing 1/8" of the mark. I added about 2-3 oz of oil and no more problems
Posted on Dec 16, 2008
I have the same problem. I have a Coleman Powermate Generator 6250 watt 10 hp. I can run it only on Choke Run then falls directly out. Does anyone have an idea why???? And I also have a problem with my switch. He was quite a while loosely thrown so now I can not remember what kabbel where to go. Please help
Posted on Aug 23, 2012
Thanks Carl. Briggs & Stratton told me the same thing yesterday. They said that the intake could actually build ice in low temperatures and that it is considered normal to have to run on full choke in such weather. They did not feel this was an issue as long as it was not blowing smoke. B&S was actually quite helpful and got several people involved including an engineer from their generator division.
Posted on Dec 16, 2008
You're both right to think that these engines were not intended to work at extreme low temps and that's a factor here.
The dry black soot on the plugs is probably just oil getting into the intake thru the breather, maybe check the air cleaner.
On some of the generators I've worked on there was a small plate in the air cleaner cover that slightly restricted air flow into the carb for low temp operation. Both of you might want to try getting a cardboard box quite a bit larger than the generator, cut a couple of holes in it to let exhaust out, and put it over the generator so that the air going into the intake gets heated a little bit by the engine. You'll want to monitor the generator pretty closely so I wouldn't recommend this overnight. You both should also be extra careful about the right amount of oil in the sump and changing it more often than usual.
My thoughts are with you folks,
Posted on Dec 15, 2008
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