Dt 125r ypvs servo motor kit have three wire
SOURCE: yamaha dt 125r power valve
Your barrel? LOL. Sounds like the valves need to be gone through. I would suggest taking and valve train apart and put it back together correctly then go from there.
SOURCE: Yamaha Power Valve System
yes you do need a battery, the best position for thr power valve is half open, then once its started turn it either open for bottom end power or closed for top end,i think that right it might be the other way round ant quite remember, but half open should be best for it to start
SOURCE: yamaha xt 125r wont start up
hello, check and see if plug is firing a blue color, if not you may need a stator-pickup coil, i have a 2000 warrior, it is firing, orange and white color, stator neede to be replaced, pickup coil was going out, also check ign coil, these have a problem with getting weak after a while. most likely it is your stator pickup coil, no blue fire from plug, no running the motor. my stator pickup coil was going out. no blue fire from plug, i was told by a yamaha mechanic, no blue fire from plug it will not run, has to be blue, not orange or white looking fire.make sure carb is clean and all jets inside are clean, and air passage ways
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