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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:

    1. Physical check of throttle rotation - ie nothing snagging / moving freely
    2. Throttle cable routing to make sure nothing is snagging / too tight
    3. Check air filter, clean air filter and box.
    4. 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.

  • Have checked it’s a lexomoto venom.

    Well, I’m wondering if the battery is fucked. Apparently the seller told him “the batteries aren’t very good on these” usual seller code for it’s fucked. I think cleaning carbs will be out of his comfort zone. Thanks for the suggestions will forward them on.

  • Absolutely understand not wanting to touch carbs. Getting to them can be a pain as well.

    In fairness to the seller, bike batteries are relatively shit. Batteries on 125cc are especially shit. My old 125cc had a rubbish battery.

    In fairness I replaced it with another cheapo, as I reasoned using a battery tender and replacing it relatively regularly was economically proportionate to its value.

    For my Triumph twin I splerged on a higher cranking on - but also because the EFI are notorious for needed more amps(?).

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