Groan. Bought a 2005 290 from a dealer on line. "serviced and good to go". It wasn't and isn't.
Rode it for 20 mins and all good, then it started fluffing a bit, then wouldn't idle, then it would rev out until I could kill it. Left it overnight. Same next day but would only run on choke before it revved out. Did the basics. Changed fuel, cleaned carb, fuel filter, changed transmission oil (which was brown), cleaned airfilter and lubed, cleaned airbox.
Started OK, but plug (a new one) very oilly so played around with mixture screw (2 half turns out, rather than the original 5) and it felt better but still occassionally fluffing. Original dealer (who is 250miles away) advised me too clean carb again, which I have done but now I have no spark and it just won't start.
Any thoughts.