Welcome! There are a few sawtooth topics in the forums as well a manual:

Yup, go to partzilla and find what your bike's model suffix is, then find a service manual.. The suffix will be either AM, AMC, FAM or FAMC

Yup Huapakechi is right, a broken key in the flywheel could do it, but if/when you get around to checking the cam timing it will eliminate or point to that. Check the cam timing first, it's easier and checks cam and ignition timing at the same time.

Depends on what you're looking to accomplish. If you're expecting actual repairs from a can, then I would vote snake oil.

According to Web Bike World it has 31 HP, to me that seems a little high for a 250, but they are great engines

All I can say is I've only been on here only for a few days now .Everyone of my questions have been answered quickly, and I appreciate it. I will also be going to get the Manuels downloaded,and maybe even be able to help someone myself.Thats the advantage of having more people participate. The more people the more experience and knowledge we share to help others like ourselves.

Interesting stuff it claims its smart nano technology and only sticks to bearing surfaces, but then it shows a photo of how it repaired scratched piston rings.

Anti friction is good, but I'm dubious about their claims it repairs wear. I mean, if it builds up a hard layer on metal, how does it know the difference between crank shaft and bearing journal, and if it builds up the surface, by how much, and does it cater for the different clearances required between roller and shell bearings. If it only puts on a layer one nano-particals thck, then that's not going to effect several thou of wear, and if it keeps building up thicker and thicker, then how does it know to stop building up for the required clearances things need to allow for expansion and oil flow. Truth is it's probably no better than any of the other friction reducing compounds we use.. nano or not.

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