Honda Generator surging - any ideas?
Submitted: Friday, Jun 23, 2006 at 16:36
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zigglemeister
Hi all,
I've got an older Honda generator, model EM1000F. I stripped it down the other day because it wasn't running too
well and found a lot of whitish buildup inside the head - probably from my bad habit of letting it run out of fuel. I also drained the carbie, which seemed to have some grunge in it. Anyway, I put it back together, but now it's surging a lot and, and overall seems to be running faster than it used to. (I discovered this the next day when it blew our laser printer up :-( -- I was just thinking to myself, hmmm, that sounds a bit fast, and one of the kids started yelling to my wife (who was doing the printing) that smoke was coming out of the printer.) So I decided to stick a multimeter on it, and discovered that it's putting out 300V AC and 20V DC - seems a bit over the top! And, as I said, it's surging.
Can anyone tell me how these things are regulated? I can see some sort of a governor arrangement on the motor, but it all seems to be hooked up okay, and doesn't seem to be that sensitive anyway. Is that all there is to regulate the power output, or is there something electrical as
well? I can see something that I think is a capacitor, but I've got no idea what it does? If any guru out there can tell me how these things work I'd be very grateful. It's our only power source other than solar (we live on a remote island in Vanuatu), but we only plan to be here another six months, so I don't want to buy another one unless I can't avoid it.
Thanks all,
Tim Zylstra
Tanna Island, Vanuatu
Reply By: kesh - Saturday, Jun 24, 2006 at 08:54
Saturday, Jun 24, 2006 at 08:54
About a 90% chance the problem is in the carby (you mention muck in it).
When the engine surges it is generally the main jet air bleed blocked. This air bleed is on top of the tube which comes down and into the top of the main fuel jet (looking into the throat of the carby)
The way to access this is to remove the carby, take the bowl off and remove the main jet (screwed in the brass holder). On the top of the carby directly above the jet is a small screw with fibre washer under covering the top of the air bleed jet. A thin punch or nail with the point flattened can push the jet up and out from the underside. A small hole in the side of this will more than likely be blocked. There are different patterns of the air bleed but the priciple is the same. (on some the hole is in the top, not the side and is easier to clean).
Re assemble all as pulled apart and she should go like a bought one.
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Follow Up By: Eddy - Saturday, Jun 24, 2006 at 16:04
Saturday, Jun 24, 2006 at 16:04
Bravo! kesh!
Top answer.
Eddy
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