have a jcl mp250a that starts fine/idles fine/runs at higher speeds just fine but has a hesitation/bog down starting from stop thru about 2500 rpm (acts like an unsteady fuel supply then as you get up to about 35 mph seems to run just fine, valves and fuel air screw are all good. checked needle and diaphram in carb and all are good. if i give it a good shot on the throttle it goes ok, but if u want to run at slower speed it seems starved for fuel. think i need to clean carb?? your help appreciated. barnie
I had a similar problem about a month ago. I also, have a JCL MP250A scooter. Poster Leo I think has placed his finger on it. I had a problem from a stop not getting much acceleration. I too, thought it was a carburetion issue. Well, I decided to check my variator and roller weights. Turns out, one of my doctor pulley weights was damaged and I had a broken fin in the variator. It was not allowing the variator to close properly until I had the throttle wide open for a time to achieve the proper RPM. Replaced with a new variator and new weights.. Runs better now then it did with the Dr. Pulley weights. Check the variator...
You answered your own question, saying if you give it a good twist on the throttle it goes ok. Up to those speeds your mostly running off the PILOT JET.
You Fuel Ratio screw is not adjusted correctly. Now it is hard to tell if your running rich or lean at low rpms. But just put it on the Center Stand and First turn the Fuel Ratio Screw 1/4 Counter CLockwise(RICHEN IT). Then twist the throttle like you do when you experience the bog. If it is Worse then Turn it CLOCKWISE(LEANER) 1/2 turn and try it again. If it gets better or it goes away your done. You may need another 1/8-1/4 turn once you put a load on it, so take the screwdriver with you. Lefty
wereed: HOw can I start a thread?
Jun 1, 2013 10:55:49 GMT -5
wereed: or respond to a thread I started three years ago...
Jun 1, 2013 10:56:07 GMT -5
marklorenzi: I just bought one of the Fleetwoods. They look like a clone of the Honda XRM's they sell overseas. It is in transit now and I should get it this week. I will try to post my experience here. Call me the guinea pig hahaha.
Jun 2, 2013 20:29:11 GMT -5
flyangler: wereed, this forum is read only the new forum is on the banner above. Dan
Jun 5, 2013 7:35:29 GMT -5
silkyg1973: can someone please tell me how to post
Jun 10, 2013 12:08:46 GMT -5