paynts01

Just checked and it says 375 ml of oil ??? doesnt seem much.

All 70 pages downloaded. haha got some reading to do.

Have not had the tank of yet to check coolant. Yes i use a pressure washer and gave the carb a good blasting last time as i was going to take it off to strip and clean.

Can anyone point me in the right direction for a owners manual / workshop manual. Hard copy or pdf. Looked on flea bay but no luck. Gas Gas txt pro 280 (2002) Cheers Andy

Would it be possible for water to get in from a missing kickstart shaft support bearing ? (ie) the one behind the carb. I noticed this bearing was missing after my first ride whilst cleaning the bike, i have now replaced it with a new one.

Hi Nigel, The bike is new to me 2002 txt pro. Cured the air leak by seating airbox properly on the carb. What is a banjo filter as i dont recall seeing anything when i had the carb apart ?. Been out to bike today and was wondering if my fuel tank overflow pipe was blocked ?. When checking this i found it had a one way valve fitted to the pipe and am not sure if it was on the right way round. Are these standard ? (small plastic valve which when you blow down it air will only go in one way). Not part of the cap but connected to overflow pipe. Dropped the oil and it looked like choclate milk shake. On my first ride out on the bike a couple weeks ago it overheated and was steaming like mad. I took the tank off and found the fan wire disconnected and reconected it. Has caused a further problem, Head gasket or something. Cheers Paynts

Hi Guys, Been out on the bike tonight for the first time since stripping the carb and rebuilding it. All seemed well for 10 mins and then the same old problems came back. Evertime you let the gas off it stalls, the revs drop instantly and it cuts out. Try kicking it over and nothing, pull the choke up and it starts straight away but revs to high to ride like that. Turned the tickover up a little 1/4 turn and it seemed a little better but felt lumpy on over run (down hills with no gas). Also with the tickover up the bike was not controlable, with the clutch in it kept pulling / going. This became to scary to ride like. Noticed in the oil window that the oil looked frothy ? also when you pulled the clutch in you could here a strange rattling noise from engine, but only with clutch in. Had to give up in the end as it was to dangerous to ride with no clutch. Seems like i have another problem to deal with now which is disappointing as im enjoying riding the bike for the first 10 mins before the problems start. Cheers paynts

OK here goes. Before i took the carb off i checked a few things. Whilst bike running on tickover i sprayed carb cleaner around the plastic boots either side of carb, this raised the revs so i now know i have a air leak especially air filter side. I then checked air / fuel screw (small one on left hand side) and it was 3 1/4 turn out so put that on 3 1/2. Have now taken the carb off and noticed a small amount of miky liquid in float bowl (maybe water from cleaning as im anal about having a clean bike). Going to blow the jets out next and give it all a good soaking in carb cleaner before drying out with can of air. Also cleaned and lubed air filter ready to go. Will be the weekend before i can do anymore with working night shifts. Cheers paynts

Like F1 said. what's the white one all about then?! How does the tube make a difference as i was thinking of going alloy to save on damage ???.

After 5 years of mx i know how critical suspension setting is, sag, rebound etc. Do you still measure sag on a trials bike ?. is rebound better fast or slow ?, is compression better hard or soft ?. Can anyone give me some settings for 10.5 stone rider 69kg. Cheers Andy

Cheers guys. When i say "backed off the throttle" i mean, going down steep hills with no throttle open and it feels like its cut out, the only reason its still running is that its in gear and the back wheel still turning, dip the clutch and give it some revs when you reach the bottom and it picks up but as soon as you back off and go back to tickover it cuts out. going up steep climbs it pulls like a train, its just when no throttle is being used. Just got home from work and going to have a look at all the above starting with simples first, Fuel air screw and tickover. Wont really be able to post my findings until i go out on it again and get up to full operating temp. Thanks again guys it is appreciated. Andy

Cheers ben. Will turn it out 3 1/4 turns and check tickover tomorrow.

Took my txt pro 280 out for the first time today. Bike started on 3 rd kick, rode down to the area for practice and the bike cut out. Could not get it to start after 20 - 30 kicks, took plug out and it was dry (new ngk iridium) then pulled choke up and it started but raced away on tickover, turned choke off and it struggled to tick over. Carried on and rode around but every time i backed off the gas it wanted to cut out. Not really sure what the problem is but it seems like carb starvation. 1- only start with choke (hot or cold) 2- wants to stall when backing off throttle. Have not had a delorto carb before so did not want to play with the screws until i knew what they did or which ones which. Any help appreciated. Thanks Andy

Thanks shercoben. So basically start it like you would a 250 4 stroke mx bike. Get the piston to the top and a firm kick. Is it best to buy plastics etc direct from gas gas ?. Last owner told me he ran it on 50-1 which he said was 5 ltr fuel to 100ml oil. Would this be correct.

Hi all just bought myself a gas gas txt pro 280 (2002). The bike has the 250 head which was professionally fitted. I assume to tame it slightly ?. Bike looks a little tired but i intend to bring it back to looking good. Not ridden trials before as ive always been into motocross but had enough of that now. Can anyone point me in the right direction for parts as they seen few and far between, im after the seat section plastics as mine is tatty and someone has tried spraying it. complete graphics and some bling. Is the 2002 the same as other year models etc for parts. I have heard 2002-2008 are the same in pro range ?. Going out for the first time tomorrow and looking forward to it. Hope to be here for a long time with lots of questions. Cheers Andy