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Peugeot Trekker 17.5mm carburetor installation

scooter is 70cc (check other video) carb is BGM Dellorto 17.5mm, with e-choke correct manifold and reed valve were purchased as a BGM kit on ebay had to buy air filter separately (35mm bore) first impressions: main jet nozzle diameter is not wide enough, ordered set of 15 different sizes, will install and tune later (had to play with main jet nozzles on the 12.5mm carb too, when installed new 70cc kit) otherwise, after tuning on warm engine, drives very good in range from 0% to somewhere around 70% throttle I think i will also re-tune the needle position...(which really affects the air/fuel mixture, currently mixture is too lean on high throttle, it will be fixed with main jet diameter mainly, but for now - I'll try to lift the needle up too) yes - exhaust is stock, and yes i know "there is no point in all of this with stock exhaust" - believe me, there is, after 50cc - 70 was huge improvement, like "twice as much power" or more, and with this it's even better acceleration wise although i do admit, tuned up exhaust is next on the list p.s. varriator weights are 7gr, have tried 6gr, and 8.5gr too. 7 seems to be perfect rev/speed compromise