Gas Gas

hi all, [edit: apparently it's a contact TXT not a Pro, also it's 2002] I realise this has sorta been asked before but none of the previous posts seemed to be quite the same thing. so I recently bought my bike, I do all the maintenance on my street bike (4 stroke) and I've got a couple of very modified scooter builds on the go so I don't mind getting my hands dirty, but this seems to be somewhat of a different animal so figured I'd check with people who might know before I start ripping things apart unnecessarily, esp as the the (paper) "service manual" ..er well.. doesn't exactly go into much detail, to put it mildly. I've downloaded the parts list pdf wh…

2021 Gas Gas 125 Racing CDI Problems. Does anyone know how to overcome the CDI failing? We have had 3 CDI's fail. What happens is it runs perfectly for quite some time on a new CDI then starts oiling up the plugs. After several Plug changes and failing in the sections due to the motor bogging down, the only cure is to fit ANOTHER £180 CDI. The last one was completely encased in Tape and sealer to stop any damp getting into cracks which eventually happens with a new CDI. It failed too. Is it possible the rectifier is producing the wrong current and causing the components in the CDI's to fail? It's costing Championship points and positions apar…

Hi. Ive got my old 05 mont 4rt up for sale and im looking to buy my first gasgas. The one ive heard a few people mention as a really good bike is the 2012/2013 model. These are in my price range so its the one i'll probably go for. Could any of you tell me the differences in the bikes throughout the years starting from the early 2000s up. Or link me to an older post with information. Things like frame change, steering changes, suspension change, engine etc through the years. And also things to look for when buying besides the general maintenance parts like brakes, bearings, chain/sprockets etc. Thank you.

Hi all. My son has damaged his radiator today and after looking at replacements on web they all seem to have an additional port on the top of them . . Can anyone shed any info on what this port is for as the 70 cc rookie does not seem to have it

Hi, I am looking for advice on this ignition system. The bike was running great and then died. I have good compression and air/fuel. I have no spark. New spark plug. Checked plug wire and boot - 5000 ohms - good. Stator has 1 yellow wire coming from it. I get 10 volts AC from the stator when spinning engine with a drill. The regulator/rectifier outputs 9 to 10 volts DC and the rad fan runs when I spin the engine with the drill. No spark when I spin with the drill. I am guessing the above suggests low voltage so maybe a bad stator - should I have 12 volts DC or maybe 14 or more like a car?. Note that there is no battery or charging…

Hi, looking for clutch friction plates for my gasgas txt 320 on a 1997 age bike or atleased i think it's a 1997 320 according to the frame id...any ideas as to where i can get some....thanks

Hi All, I've just bought a non runner Gas Gas TXT 250 and i have a couple of questions if anyone can help. There is two wires going to the airbox what just pulled out of the box when giving the bike a service what do these do and what are there function...? and I'm after fitting a kill switch has anyone got a wiring diagram pls. Kind Regards Kev

Hello, I need to install my new bearings. I've watched Jim snells video which is great help. I'm just wondering when I heat the left crankcase is it ok to have the magneto seal already fitted? The seal must be fitted before the bearing. Can it withstand this temperature? Thank you very much. Gary

My 2003 txt300 died a while back, well more like a year or so ago. Lost its spark, checked the basics & sulked with it. Now winter is here so Id like to get it up and going again, although patience is running thin already!! Its got the "oh-so-reliable" Ducati ignition setup (joys). Stator is giving about 1ohm, spinning the motor over on the drill gives around 16-20v. Pickup is 242 ohm, so seems ok? Cannot really measure the output without an oscilloscope but the resistance checks out ok. Tried two reg/recs. It had a new one for the last issue which was a slow cooling fan. Wiring checks out Earths are all good. Looking like possibly the c…

I've been riding my 2020 300 GP for a while now and love it but I am struggling to adapt to the clutch. It's very light but the lever throw is quite long compared to previous bikes I've owned. I'm aware they have a 3 stage adjustable clutch but I can't seem to find much information on them or if adjusting it will have the desired effect. Basically I want a shorter lever throw and the bite point to be more instant. Can anyone shed some light on this and what the 3 different positions do? Cheers Kirk

Hello. After installing a new driveshaft bearing I'm a little confused about the two o rings that go with the shift seal bushing. I think the skinny o ring goes inside the bushing And the thicker o ring goes over the outside of the bushing under the lip of the oil seal. Is that correct?? Sorry just can't quite remember what way it was.. Thank you in advance. Gary

So I have a 1997 JTX 270 which runs and rides an absolute dream...or did... I was out on it Saturday riding with no issues. Rode it to a stop and (I believe) put it in neutral. After a quick break I go to start it again and attempt to click it in to gear....no click. Gear not engaged. Shifter returns to normal position. Tried shifting up, again no click, shifter returns to normal position. With bike off, I use my hand and push the shifter. It moves full travel with no clicking in to gear. Almost as if there are no gears. I have an event on in 6 days time so any help ASAP would be ideal! I'm under the impression it could be an issue with the top hat …

Hi guys, hopefully you can help me make my mind up on this, basically I bought my Daughter a newer bike (2019) to replace her (2015) I'm happy with it otherthan the rims are tatty on the 2019 so I was going to swap the wheels over, the rear wheel is the same dimensions no problems, but the front 2015 has 61905 bearings and the 2019 has 6004 bearings meaning the wheels will not fit due to spindle size, forks etc... so my idea is to take them both appart and swap rims round???? I've invested in the truing stand and wrench etc and watched several videos but when I get close to doing it something/someone puts me off i.e. there is a lot of measurements you need to take, it's …

Hello, Let me introduce myself briefly. My name is Alex and I am an Gasgas enthusiast from Holland. I've been in the middle of hot fires, but now I'm clueless. Herr’s my problem, I hoop you can help me? Gasgas TXT 300 from 2004 does not want to start What have I already done: Kick starter gear replaced. Replace ignition coil. Replace CDI unit. Replace the voltage regulator. Carburetor ultrasonically cleaned. New spark plug. New piston and cylinder replaced. Strangely, he sometimes starts in 1 or 2 kicks but after stopping he starts very difficult (10 to 15 stairs) most of the time he doesn't start a…

Hello , can someone please advise. Is it OK to replace the driveshaft bearing with a version with non metallic seals. Original bearing is a 6005zv. The version I bought is a skf 60052rsc3. The noticeable difference is the original has metal seals where my new one has rubber seals. Is it OK if I use this one and would it be a good idea to remove the rubber seal on the internal side to allow extra lubrication from the gearbox oil? Thanks in advance Gary

Hello could someone please advise me. What is the best way to remove the oil seal crankshaft on the magneto side. I want to remove the crankshaft bearing to replace it. Does the seal get pushed out at the same time the bearing is pushed out? Thanks in advance. Gary

Hello, I'm putting my 2009 engine back together. When I put the two crankcase together they won't meet even with some gentle persuasion... there's about a 5 mm gap and I don't want to force it and break something Have I to get the gears into a certain position? Or should it slide together in neutral. Is there some trick I'm missing. I've watched Jim snells video but his just tapped together effortlessly! Thanks in advance. Gary

I am looking to purchase a trials bike soon to try out this type of riding. I rode plenty of other types of bikes before but never a trails bike. Im not looking to spend a whole lot on one since it will be just something to play around with and have fun with. there is a 97 gas gas jtx 200 for sale in excellent condition that needs nothing and in great running condition. he is asking $1400 for it but thinking about offering $1200, is that a good price for it? Can I still get parts for it pretty easy or would it be hard to get parts? Another question, i was looking at 250cc or above, will the 200cc have enough of power? im 6' 195lbs. I read the actual size of the engine is…

Hi everyone, my Gas Gas 300 raga 05 is leaking coolant from the over flow pipe,its been doing this for a while so i changed the rad cap. thought this had cured it until when out yesterday i noticed it was dripping from pipe again.so today changed 'o' rings in the head but while trying it today i noticed the fan was not running as it shuld. when its on the fan seems to be running ok then it has a drop in power then picks up again.any one had a similar problem and what was the cure. THANKS.

Hello can someone please advise me. I have my engine split to replace the crankshaft bearings. The crankshaft is stuck in the flywheel side of the casing. I've tried a tap with a rubber hammer but no joy. Any suggestions greatly appreciated. See pictures Thank you very much