Dong Fang tilt lock governor

[mnfitz]

Does anyone know the nature of the governor associated with the tilt lock on the DF-DTK150A? Is it affecting fuel or ignition?
I'm tracking down a sudden loss of power above 25 mph (I was riding along at 45 mph and suddenly bogged down to 25 and that has remained my max since). Scoot runs fine up to that speed if throttle is less than half open. It felt a little like the cut-out I get if I try to accelerate with the tilt lock engaged so I'm wondering if it's related.
BTW, I have looked for vacuum leaks, changed the fuel filter, and installed a new (gapped) plug. Next thought is to remove carb and see if I've got something stuck in the main jet (and possibly rejet to a larger orifice. Speaking of removing the carb, there is really lousy access through the two holes in the under seat "pan".... looks like I'll have to take much of the body apart to get to the darn thing. Will also check valve gap while in there.
Any pithy advice from one who's been there?

[sarge707]

The Governor clicks on at 3,500 RPM and drops immediately to zero then starts building.
To check the Governor Put it on the kickstand and slide a 1/8 inch piece of cardboard between the 2 contacts in the middle of the front suspension and it should inhibit the governor and rev to 8,000 rpms without the beeping!

[mnfitz]

Thanks, Sarge. Is it possible/probable the governor could kick in without the beeping?

[mnfitz]

BTW, I got her running like a scalded dog again without pulling the carb. Checking to see if I had a gross intake air leak, I pulled the air cleaner and killed the engine by stuffing a rag in the air intake. Ran great after doing this. I'm speculating that I had a partial restriction in my main jet that got dislodged by spiking the vacuum like I did.
I guess it's better to be lucky than smart.....

[sarge707]

A lot of people swear by using SeaForm (Walmart $8.97) in the gas that it keeps everything clear and clean and helps absorb that ethanol additive in the gas.

[cliftonc]

The ethanol blended into the gas is a crappy idea - this time of year, when the weather is cooler, it almost seems to attract moisture. My riding mower (OHV Briggs engine) will do this also. The take-out-the-air-filter-and-stall-it-by-blocking-the-carb thing is a several times a season thing. The ol' GY6 has not done it yet, but I run SeaFoam. I don't know that it helps, but maybe. I think Sarge is on the right track. It does help the old Honda Elite 250; it does not have a choke, but an "enrichener" needle to help the cold starting, and it used to stick now and then and cause idle problems. I started running SeaFoam in it about 15 years ago, and the problem went away.

[mnfitz]

Just bought some Sea Foam myself this afternoon and put it in my gas tank (only). I'll probably repeat from time to time....