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Richard, that sure is encouraging news on hiccup. Some of the smallest things can upset these engines. I think I would try just a belt on the transmission and see if that helps with your clutch engaging dilemma. You know how sometimes 1 thing will take care of 2. If it runs ok for couple days I would say u got the gremlin. If your belt is slipping any it could cause your clutch to want to engage in & out. I have my idle set at 1900 rpm and every now and then I can feel my clutch wanting to kick in and out. Your clutch culd be ok, just belt causing goofy stuff. Barnie

Richard, we've paid our dues and we are entitled to those moments. I always tell my wife when I goof up something "I'm old". There is a slight possibility that may be part of ur hiccup, starved for air at high speed?? Probably not but see how it runs now. I am still leaning towards ur clutch and belt for that. Barnie

Damin, if you are very careful removing the seal and bearing, chances are you can get them at your local auto parts dealer if you have a supplier of decent size. All they have to do is measure the inside and outside and thickness with a digital caliper. They most likely will be in a metric size. Also as Richard said they both will or should have the bearing numbers on them. You may have to spend a little time matching them up if the numbers don't match. Barnie

Richard, I also used to have a Roketa mc54b-150 which is identical in every way except it had a gy6 engine. The clutch looked the same as the 250 i have. It may be possible that the springs in that clutch will fit the 250. Parts for scooters at 1-866-478-8700 has a wide variety of spring sizes. It might be worth a call to them and have them measure on of their 1000rpm springs and campare to yours. I used to get parts from them for my 150 and they are good. The springs are like 9.99 for set of 3 . A phone call is worth a try, you might luck out. .partsforscooters.com" rel="nofollow" target="_blank">.partsforscooters.com 1-866-478-8700. Barnie

JR, I have found experimenting that a longer belt than stock size or a stretched belt lets the variator ride out at the top like its should but the extra length causes the belt to not drop as deep in the torque converter causing a loss of top speed because you reach high gear on the variator but not on the torque converter. What are you findings. Richard, guess your still looking for the witch but I am sure u will find it. Barnie

Ernie, I have the same exact scoot you have only mine is blue and silver. 2007 JCL MP250a with linhai 257. Barnie

Richard, blue bell would indicate your clutch has gotten very hot, whether only 1 time or often would be hard to tell. It will tell you that it has been slipping probably quite a bit from glazing or weak springs not holding the pads tight against the bell promoting a lot of heat. The belt should not cause the clutch to slip. As long as the belt is turning the torque converter your clutch should engage unless your belt was slipping severly at which point you would really know it as scoot would hardly want to move. That does not appear to be your case since your still riding it. With 15000 mile on it the pads may be just super glazed and hard. You might check the price of new pads & springs vs the cost of an entire new clutch assy and of course a belt. I use hi temp implement grease in my clutch and on only the 4 guides in my variator not other grease in my variator. It seems to withstand the heat without breaking down. The lithium you use is also good as long as its hi heat rated. Maybe we can get JR and Alley and anyone else to add their comments. Normally several suggestions come up with an excellent outcome. PS. make sure your contra springs is good and not broken, that could cause your clutch to slip by intermittedly engaging. Barnie