hi andy c, i have to agree with you as i too have re set from original setting of 9 to 15 then 25 then 35 and last 40 but its made no difference, im gonna try going - setting and see what happens, im kindda surprised that yamaha are putting bikes out that surge although my mate just got a brand new ktm and it does exactly the same. will keep ya posted.

ok so i went from setting 9 to +100 and everything in between and down to -30 and everything in between and i didnt notice any difference. ive gone back to +9 (original setting) should i try the throttle sensor angle or should i just take it back to the shop and put it on them ??

Dannyw please try these two things: one you said it already is to adjust the throttle position angle and the other is to increase the idleing speed between 1450 to 1500 rpm. Don't worry this only affects low regimes, and will make no difference when you get going over 10mph but it will help your bike keep a decent level of acceleration when you pootle about or downshift gears.

If the problem persist then by all means take it back to Yamaha and threaten them by demanding either a full refund or a bike that runs smooth. We are aware that there are a very limited number of xt bikes within the 07-08 range that are just tuned imperfectly and as a result have proven impossible to rectify, Kev had one of those himself. However he managed to obtain a new ECU and after that things have improved a lot.

Good luck and let us know how you got on.

Hmm, I to have a brand new 2008r (900km) and actually I just thought it was me being used to the drivingschoolbikes and that the XT always behaves like this :D It feels almost like it never gets warm or something.

My bike is nearly impossible to run here in the city where the speedlimit is 30-50 km/h. Only way I can go smooth is to use high gears and no throttle or else it keeps jerking around making me almost jump around.

Bike is goin in for first service next week and I will see what they say about it.

I also have an 07-xtx with surging and cutting out problems and if i was you i would take it back to the dealer now and tell them to sort the problem or replace the bike for one that does not surge.
The longer you leave it the less they will be interested to sort your problem,I am still argueing with yamaha uk over mine now and don`t seem to be getting anywhere,The bike should never be put on the road running like this.
Andy

ok i took it back today and they are going to try and fix it next friday, i was amazed at how they really tried to convince me it was normal and i should not be bothered, really strange that they would think that someone would just except that a brand new bike should act this way, i even had to mention my lawyer, does anyone actually know where yamaha legally stand on this? im sure they are libel to make the bike work correctly no ?

absolutely! If you as a rider consider it a danger to your health and safety, then you can start quoting risk assessement and all that blx... :rotf[1]:

Not sure how far you'll get under Spanish Law - they tend to take caveat emptor VERY seriously.:thumbleweed:

Hi Guys, I too have an '07 XTX which shows the same symptoms at roundabouts/corners etc. I wouldn't say it was dangerous but I did feel like a bit of an idiot the first couple of times. It made me look like an amateur rider even though I've been riding bikes for 20 odd years. I've only had the bike about a month and have got a bit more used to the throttle although every now and again surging still happens. Perhaps it is something I'll get better at? Or as I have still a year on my Yamaha warranty could I possibly take this up with them?

what is caveat emptor ?