Hey guys, Just came to ask for last minute advice before i dive on into adjusting my valves for my first time ever on my 2002 yz250f.

I been reading some guides, printed out some picture guides and reading my Clymers book...Any last advice? Or maybe some links to other guides just to give me a better understanding of how to do it

Clean work area.Micrometer.And calculator if the mic isn't metric.Paper and pencil.Write down what shim came from what valve.If needed sometimes you can swap shims between valves to get clearance.No beer until it's done and take yer time.

I need to go out and buy a Micrometer i forgot one of thoes! Do you think just a little 10-20$ one from a parts store will be good enough or should i go spend the extra money and get a little nicer one?

My buddy who works at a power sports shop said he would also come help/show me how to do it...for a case of beer lol.

A nice dial caliper will do the job as well.Buy in metric so the math is easy.

Pay special attention to the circlips in the cam caps. The circlips can fall out of the caps and fall into the lower end of the engine.

Also, be sure to use a inch pound torque wrench on the cam cap bolts. It is CRITICAL that these be torqued correctly. Over tightening them can damage your cam and head.

a magnet on a stick is very helpful

Indeed. Keeps the shims seated in the buckets when removing/installing them. Also great for retrieving the stuff you drop into the bottom of the engine (cam cap circlips).

I use the $20 digitals from the parts store. The do both metric and standard with the press of a button. They have seemed accurate so far, they are always right on with the new shims.

Well don't keep us in suspense!How did it go?

You'd be surprised how helpful a decent digital camera can be in documenting your work. Sometimes a few macro photos here and there really pays off.

Good luck.