nsr 125 not starting was running?

you cannot adjust the ignition timing its set in the cdi unit,but there are a list of things that can stop it running mate,ie..broken reed petals in the reed block blocked exhaust pipe,old stale fuel,fouled spark plug,leaking head gasket can wet a plug and stop it sparking,dodgy side stand switch dodgy ingnition switch,dodgy kill buton, leaking crankseals.and so on its hard to pinpoint the problem unless you individually eliminate these things,i know i have had a problem with this model before where the spark would breal down due to a faulty primary ignition coil or stator coil so that may be worth a look but its hard to see if its ok you just need to get a replacement really.good luck

adam bike doctor
January 2007

Try a new plug, I had that problem a few times with moto-x bikes. It sparks ok out of the cylinder but when replaced it won't start, just the occasional back fire.

tony transit
January 2007