notfallenyet

Thanks for the helpful explanation. By throttle slide do you mean the round cable guide in the throttle or the slide in the carb.

By slow action throttle , do you mean the amount of travel the cable will move relative to each degree movement of the throttle grip?

Hi, have any of you good people experience of riding the following 2 bikes. 1999 TXT270 and a 2002 TXT280. My query is that even though the 2 bikes are running fine there is a vast difference in low down power. The 1999 is very relaxed to ride and has no aggressive tendencies. The 2002 feels like it has a mind of its own and will happily wheelie given half a chance, it feels like it has a lot more power. The 1999 bike has good compression and is in very good mechanical order. Can anyone suggest reasons for this difference in performance? Thanks in advance.

Rear brake master cylinder part no; R350100 for TXT280 2001

Have a look at these photos. I've just completed what you are considering for your own bike. Would I do it again ?? NO. I'd spend the time riding the bike !! http://picasaweb.google.com/sligo1001/GasG...IfLpcyuvbmK6wE#

Taken as an extract from the service book. Hope it helps Maintenance summary Cooling liquid -30

Well folks, after a LOT of searching and examination I have come to the conclusion that it could only have been the throttle cable not allowing the slide to sit down fully. Possibly caused by the outer covering of the cable sitting on the collar at either the carb or throttle end. Thanks for all your suggestions. Hopefully this experience will help others in the future.

Have already posted this in the Gas Gas section and have had some responses but hope to get more coverage here!! I've already read several posts about this problem but hav not come across the definitive answer. Some people have had the same occur on Sherco's also. Any help would be greatly appreciated. Hi Folks, Well the story goes like this, up at 7am have some porridge (need the strength) load the 2 bikes. Drive 15 minutes and meet my pal. Take the 2 bikes out, 1999 TXT270 and 2002 TXT280. Jump on my old 270 starts first kick!! Turn around and look at my pal who normally takes 3-4 kicks to start the 280 and he's bent over the bike. What's wrong now?? Seems that when he started the bike which happened to start first kick, it over revved uncontrollably. We started it again twice and the same thing happened. The engine kill switch did not seem to perform it's function as efficiently as I would have liked during this over revving. It took quite a while for the engine to stop. Load the bikes up again and home to the dungeon. Cleaned the carb which was not dirty. Air filter is clean. Petrol is fresh. Carb / throttle function is correct. Bike has a Delorto PHBL 26 carb fitted. Spark plug was slightly creamy in colour but dry and clean with a good spark. The bike is in very good condition overall and has not been abused. We're not talking about a bag of bolts here!! The last time the bike was used was a week ago and then it did not want to idle, it settled down after about 20 minutes so we passed no heed of that. So anyway people, what do ye think is the reason for this over revving. Thank you in advance.

This may interest you or others looking for the elusive measurement answer. http://www.ducatimeccanica.com/dellorto_gu...llorto_3_2.html

Long time after you've asked but here's a link may help others. http://www.ducatimeccanica.com/dellorto_gu...llorto_3_2.html

Thanks for your input. Rubber connector was checked when we removed the carb to clean and was found to be perfect. Can you please explain how the engine had the ability to rev so high without any extra fuel been supplied by the carburettor. Am I correct is saying that the only fuel entering the crank case was through the idle jet which was not altered at that specific time and does not allow a variable amount of fuel through. Why did the engine cutout switch not do it's job, yet still when checked it does remove power to the ignition circuit. Does ATF which is been used in the gearbox ignite on compression?

Hi Folks, Well the story goes like this, up at 7am have some porridge (need the strength) load the 2 bikes. Drive 15 minutes and meet my pal. Take the 2 bikes out, 1999 TXT270 and 2002 TXT280. Jump on my old 270 starts first kick!! Turn around and look at my pal who normally takes 3-4 kicks to start the 280 and he's bent over the bike. What's wrong now?? Seems that when he started the bike which happened to start first kick, it over revved uncontrollably. We started it again twice and the same thing happened. The engine kill switch did not seem to perform it's function as efficiently as I would have liked during this over revving. It took quite a while for the engine to stop. Load the bikes up again and home to the dungeon. Cleaned the carb which was not dirty. Air filter is clean. Petrol is fresh. Carb / throttle function is correct. Spark plug was slightly creamy in colour but dry and clean with a good spark. The bike is in very good condition overall and has not been abused. We're not talking about a bag of bolts here!! The last time the bike was used was a week ago and then it did not want to idle, it settled down after about 20 minutes so we passed no heed of that. So anyway people, what do ye think is the reason for this over revving. Thank you in advance.

Hi Folks, have a problem with my 1999 TXT270 seems to be getting air from somewhere other than through the carb. I have already cleaned the carb but at low revs the engine runs very erratic. Will check the following tonight; Carb to cylinder rubber and crank shaft seals. Anyone got any other suggestions?

Well PeterB, thanks for the info. Going to buy some fluids and get changing.