@SpookDog If you take it apart, use a drop or so of bearing/thread lock to secure it properly...

@SpookDog The bike is a 2007 model

@james said in Difference tzr125 and dt125: @Calum hi pal iv dun a lot ov work on it with the tuning and its cost me in the long run but I love it it's an 1989 model how do u up lose a pik I’ll save Cal the time of explaining how to you, I owe him that much at least make imgur account upload the image you want to share on here on to imgur once the photo you want it share has uploaded to Imgur, go to share it and copy it’s link press the little image button you see at the top of the screen when you type and then paste the URL of your photo from imgur Happy days!!

@SpookDog Yea I know, but I have a local shop that’s got all kinds of bearings and oil seals. So I just wanted so see if they had any who fits my engine. Then I don’t have to wait for delivery and etc. But do you know which ones come originally?

@james Thanks for the tips! I have a spare engine that I will swap it with in the meantime. Thanks to everyone who have helped!

I wouldn’t worry so much. If so keep the pre-mix. Otherwise put the clear tube on, see the flow and trust Yamaha

I’ve had similar temperamental problems with this (& a 100 other things!!) The only thing it can be is the needle valve that is operated by the floats (or the floats themselves!)old fuel varnish or dirt is the usual suspect... You can get a replacement kit I think. The needle and the brass insert it fits into... A good inspection and clean is usually good enough... P.S. the ‘weight’ of fuel can exasperate the situation, or it has in my experience (which isn’t much!)...

@SpookDog Have drained the carb multiple times, No water and stuff

@SpookDog meant to quote Declan there pal. With the athena kit it's a complete unknown quantity. Only issue I've experienced with running a colder plug ( a10 range on nsr125) was it would foul and cause a missfire when the weather turned cooler.

@Calum yeah

3bn 1988 model.

Cheers bud, that’s something to work with. I’ve got a good 3bn, my reworked 3mb and another 3mb (that I forgot about till now) that is battle~scarred but otherwise original.

Yamaha just refer to both of them as Air Chamber on the parts diagram's - I still say its not a performance item and its just a bolt on for emissions / silencing etc.

Thanks for all the respons. I did skim the head, but i will try to tighten the bolts

@jackreece show a picture with your tm32 installed. The float bowl needs to be pretty level. Because of how the DT engine and intake is, some carbs will sit at a angle

@Challenger yeah I really wanted it to either be the graphite colour or just the standard silver but it’s all the paint I had or could get during lockdown so is what it is

Yamaha TZR125 DTR TDR 125 Wiseco Piston Stock 56mm Bore 679M05600 on ebay aint bad at all either they range .5mm and have 8 stages u have to have a rehone though to be sure u aint blowing your funds

Also, does the block breather pipe connect to the carb just behind the fuel in pipe? Cheers peeps!...

Hey! You weren’t wrong, there is a paper gasket. I was wrong about the oring though. It’s to big for the coolant pipe