Hi all. I have a Yamaha 100cc 2-stroke scooter. It is self lubbed. I can get about 90km/h out of it, but it is very lazy. Takes ages to get there. The scooter also sort of drop revs and then picks revs up slowly when the accelerator is opened midrange to full.The scooter was serviced. Airfilter and carburator cleaned and new sparkplug. Exhaust was checked as well. Runs on leadfree petrol. When I accelerate from 0km/h with a wide open throttle it slowly picks up revs. Before the first service I had it would rev high on the getaway. I now think they did something wrong when they serviced it. I took it back, but they assured me they did nothing wrong. I changed the sparkplug again, but the result was the same. Any ideas why it does not rev high on the takeoff?
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