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If the battery is aok, and increasing the fuel (ie throttle open) keeps it running then it sounds like it may be something to do with the air / fuel mix.
My order of checking would be:
- Physical check of throttle rotation - ie nothing snagging / moving freely
- Throttle cable routing to make sure nothing is snagging / too tight
- Check air filter, clean air filter and box.
- Check and clean carbs.
At as an interim 3. and 4. could be achieved with a stiff brush and spraying a shitload of carb cleaner spray down there. If it is the carbs and they need a proper clean then that's a bit of methodical time and patience (and heavy note and photo taking)
lexomotos will be a cloan of a jap engine. He should find out which one it is.
- Physical check of throttle rotation - ie nothing snagging / moving freely
hugo7
TM
A mate just bought his first bike, a lexomoto 125, couple of years old, low mileage.
The seller dropped it off in a van. It started easily, he rode it for a couple of days (about 4 hours riding time altogether) and has filled tank up with regular unleaded. last night attempted to start it and wouldn’t start. He ran battery flat trying to start it. Went out and bought a charger. Charged battery. He’s managed to get bike to start but it doesn’t tick over, only runs if he keeps the throttle open.
Any ideas experts of LFGSS? I’m shit with engines. I told him to ride it a bit and see if it rights itself.