This is the full Indepth engine rebuild an assembly video of my drz400s, this also applies to the ltz400 dvx400 an kfx400 four wheelers they are the same engine. Also most all four stroke atv an dirt bike engines work the same, use my video an your service manual for what ever model you have, they all basically are the same other then the different tolerances on things. enjoy an please subscribe an hit the bell for future videos, thanks for watching!