mikee

If your just going to the base gasket then you will not need to undo the head bolts, just the four bolts around the base of the cylinder. Then you can lift the barrel off and fit a new base gasket. Yes the CD if of help ut i don't think it has all the torque setting on it..

Couple of links you might want to have a look at..gas gas and this one gas gas I've just rebuilt my 2005 pro 250 with new mains and gear box bearings and found both the links very help full. Sorry can't give you more help with torque setting, but i just do it by feel with good spanners. I run 55ml of TTS to 5 lilters of shell V-power.

First step i would take is a new plug or dry your old plug out with a air line. Still no joy, then put some fersh petrol with a clean DRY plug. see how that goes.

Hello Max, Have a look HERE tells you all you need to know about dellorto carbs. Don't think i be ridding sunday as it looks like the main bearings and crank seals have gone on the GASSER.... mike.

Black and white would of been better.....

Another good place to try next time your down this way. Here Some very good trials ground and nice people. And another place down here i would reconmend this place.

Ok a bit of an update. Got the parts from Eurocarbs the next after the order went in, which is what I call excellent service. I have replaced all of the orings in the carb with new. Fitted a new banjo filter and the fuel mixture screw washer that was missing. Carb is a 100% clean and all jet where removed and blown out with compressed air. Bike fired up and all seems to be fine. Got down to are practice sections and the bogging started happening again. First part of the throttle seems to be ok, but still fluffy at the top of the rev range. Moved the needled up a clip and checked the plug, which was very light. To lean then.Turned the mixure screw to richen it up. Away rode some more and the bike feels like it wants to rev out now, but its still fluffy. I do not recommend this to most people but it has worked for me in the past. (Motor cross bikes) I held the throttle wide open and revved the crap out of it for 20 seconds, full wide open throttle. Lots of smoke came from the tail pipe and the engine revved out to its max. All seem good now the bike is revving all though the rev range and throttle response is very good. Carried on riding and did a few checks on the plug which now is a nice brown colour. Alls well and I am happy. Found this on carb setup. dellorto carbs might be of help to others.

Mines not. just bolts with nlylock nuts...

Thanks Jon. Been down most of the ideas you have suggested and all seems well. I think I have found the cause and it was with the dellorto carb. There was no washer and oring on the end of the fuel screw just a spring. I have order the parts from http://www.dellorto.co.uk/ and hope they will be with me today/tomorrow. Let you know how it goes

yes i cleaned out the banjo filter and tanken the tank off and cleaned out the fuel on/off tap. i've set the float height to 18.5 mm and cleaned out all the jets .. main jet is a 118 and pilot is a 35. the needle is set to 2nd clip up from the bottom. fule mix is 80/1 fully synthetic with shell v power. tank vent is bearthing ok. my only concren is the rear donught on the back of the carb where the airbox meets the carb.this all seems tight,but could be letting air in and makeing it run weak. the bike will not rev out cleanly at higher revs and has excess smoke from the exhaust. could this be crank seals that are on there way out ??? thanks for any help...

Looking for a bit of help setting my delorto carb up on my gas gas 250 pro 05. I

Get someone to fill the holes with alloy weld and then retap them to an 8mm thread . lot better than heicoiles , as they tend to pull out after a while...

Just picked up this nice clean 2005 gas gas 250txt pro and would like to know a few things other owners are using regarding oils, sprocket sizes and the like. I

Dextron 3 ATF . They sell it up mole avon about 12 quid for five liters and that will give you 10 changes..

Can not seem to find much about these bikes... so if anyone has any info please post it here... thanks mike

Here is one of there bikes... Ebay link Its going to go for big money mind....

Bit of an update on this one. Took the engine out and I started with one extra base gasket to see how this would affect the low down power. You could tell just by the exhaust note that it was a bit softer. Rode the bike for about two weeks and did one trial like this and found the bike a lot more manageable. So took the motor out again and put another base gasket in (3 in total now). I have not changed anything other than adding two base gaskets and now the bike is very good to ride. The power comes from right off the bottom of the of the rev range and is very smooth and talky. The exhaust note has a lot less of a crack to it now. The bike finds grip in the mud with out spinning out now and does not try to tear your arms off when things start to go wrong... Might go the other way in a year or two and fit a racing thin base gasket, take the flywheel weight off and fit a fast action throttle, but for now I

Had this problem a couple of times and found the easiest way was to put a air impact gun on the spindle with good fitting Allen socket. Found the vibrations of the gun soon freed up the spindle. Hope it helps. Or hit it with a ****ing hammer..

yes i was being thick... http://www.bps-eng.com/ thanks again...

yep there fat bars..

Ok i'm looking for any info anyone has on these bikes. Am i right in thinking they are French??? Big big thanks for any help..

Thank mate,, forks are standard for a rev3 year 2000.. I call them the "hard work frontend", because they are heavy.They do work very well mind but you don't want a trial with lots of four foot step-ups...

Could be the left hand side crank seal that on its way out if it seems over smokey.

Are the 200 rev3s nikasil coated ???? I was told back along that they where an ordinary bore, but could wrong. would like to know though...

Links not working Dave .. try again.