My husqvarna sm125 s over revved and now it will not turn over

SOURCE: bike shut off when riding.

Hi and welcome to FixYa,

Your description indicates an electrical malfunction. Offhand, the jump start and charging is significant. This points to the bike's battery not charging. Suspects would be:

• voltage regulator (most likely);
• connectors to voltage regulator (likely). Check/clean corrosion/burnt marks;
• stator and/or the 3 wires coming from it (least likely).

SOURCE: hard to start yz250 dirt bike 2001 4stroke

i used to own a yz426f and it had the exact problem... a fresh plug will fix your problem. change the plug and the bike will run great. also don't start the bike and shut it off , my bike would be fine if i started it and rode for a while getting to the proper heat range help save the plug. if my bike didn't start in one or two kicks it was usually the plug.



hope this helps

SOURCE: my 1997 dirt bike wont start

check for fuel fire and compression
if you have all of those check the reeds

SOURCE: zzr 600 carb probs

The fuel tanks are common to rust through, maybe that is where the dirt is from.

SOURCE: My 1984 xr250r needs help!

well you can do the idle and maybe fiddle with the mixture screw right on the carb will be a screw and idle screw you need to turn this in 1/4 of a turn at a time with the bike running until it idle ok and the mixture screw you simply just fiddle with this turn it all the way in and unscrew it 2 turn and try this get back to me if not ok