My pit bike 125cc wont fire up

Stator will stop the cdi from firing the spark plug and either cdi or stator if bad will stop a spark from being created. The coil, wiring, kill switch and other things can also stop ignition spark.

possibly plug, and working backwards plug cap ht lead or coil and after that possibly cdi or its wiring

pull cover on magneto and check for loose pickup coil.

you will have to check lead to spark plug then lead to coil
if your not getting spark at plug it could be a number of things ingintion
or just a loose wire best of luck hope you solve it

It creates the spark to your spark plug

Tryd go to auto shop and check the carburator of your motor and clean your air filter adjust air setting in carburator and put a new fuel pump check fuel setting in carburator

Yep, clogged fuel filter, dirty carb. ????

either it is not getting enough fuel or it is getting too much, the adjustment you have made is wrong, go back to the owners manual and recheck the setting.

If you have spark them it must be gas. eather no gas or to much gas. Put it on chock, be sure the shut off valve is in on position.Now crank it over a few times , if it wont fire. Check the plug , is it wet or dry .If its wet then it may be flooded and needs to dry out and air out the cylinder.Try starting when dry. If its dry try putting a 1/2 oz of gas into the spark plug hole. replace the plug and turn it over . This will get them to fire up. Good luck DFD

remove the alternater cover and check all the wires are intact behind there