r/2Strokes

The sound becomes very rough, almost as if the engine only fires on every second revolution and it loses most power. It sounds similar to a rich bog but what bugs me is that it seems more speed related than rpm or throttle related, the engine runs perfectly fine below 50 kmh, it only starts to do this at random speeds above that and also in all throttle positions.

This is a mate I’m helping with his bike, sounds like it’s bogging due to too much fuel. I’ve took off the carb and I’m going to check the jets and everything. But I would assume it’s not that, I took off the powervalve cover and made sure it was all okay everything looked fine. I also checked the reeds and they looked okay. The bike is a Husqvarna TE250 2015

where can I find the rubber o ring and shim for where the carb mounts to the intake spigot? mine are old and cracked and the bike barely runs due to an air leak from them. none of the carb rebuild kits have them and I can’t find any online. thanks

2006 KTM XC-W 200 with a 2k3 flywheel and stator. The stator has no marks on it. I’ve found 1.6mm BTDC with a dial indicator as specified in the manual (center sharpie mark), but the timing light shows the make jump around. I think the CDI may adjust the timing based on RPM, but I’m not sure if these bikes do that.

How do I adjust timing correctly?

Does anybody know what type of main jet this is? Can’t find it anywhere on the web. Its for a 50cc Keeway scooter (Keeway X-Blade 50cc 2018). Engine type: 1E40QMB-4. Carburetor brand is Leader.

Always been a quad guy other than couple small bikes Got motor put back together and got to rip a little now just gotta fine tune and get the fresh rubbers on 🤘🏼

Recently I wanted to get into tinkering with motorbikes (I have little experience but everyone has to start somewhere I guess🤷‍♂️🫣). I wanted to upgrade from a 50 so I put a Motoforce cast iron 70cc kit on my Derbi Senda xtreme sm 2014 all gaskets on done everything up everything seemed to be in check.. then as I started the bike it had coolant leaking from the exhaust manifold and also coming out from the bottom of the head where the base gasket is.

It seemed to be built up in the little port too(image attached) I’ve drained it all out and changed the oil also as it was contaminated with coolant it seemed but flushed that through. It could possibly also leaked into the crank case?

My question is what happened to be causing the issue and how can I avoid it happening in future?

Any help / advice would be greatly appreciated guys, like I said I’m not very mechanically minded so I’m learning as I go along..
thank you!

Kx250 1998

I put new rubbers in my carb so it was completely of the bike, after reassembling it this is the result, what is wrong? I feel like its the gas cable

this piston has 50 hours on it, but not from racing just medium-paced riding. it’s from a 2022 KTM 125 sx, and i need honest opinions whether to change it or not.
thanks in advance for any help

Goes into gear I can feel the bike jump and wheel turns while suspended in the air but when on ground and I put it in first seems to still be in neutral, Would this happen if I installed clutch plates wrong? cable is pulling fine at the end of the video

This is my newest and craziest finished project: Husqvarna WR 360 from '99. Never thought I could get my hands on a low hour big bore two stroke, but here we are 🙂

She was sitting in a barn the last couple of years. I put three months of work into her to bring her to this condition.

My garage is full and this has been in the basement for quite a while. The basement is getting finished, so until I make some room I guess it’ll be living room decor 😆 I need to get it out and put some miles on it this year!

(mods if memes are not allowed I'm sorry) Minarelli is everywhere in the low CC 2 stroke world especially with the freaking minarelli AM6 that i powers freaking everything Beta, Fantic Husqvarna, Aprilia EVERYTHING. It also makes some cool higher CC engines like the double injected 300cc fantic one

Good morning. I need help please. 2000 Yamaha 40hp 2 stroke 3 cylinder. My son took his boat out yesterday and the plastic linkage end broke so the zip tied it to get back. I was able to make a more permanent fix but then noticed the aluminum shift bracket going to the lower unit was snapped . I can't find a video on YouTube about it. Can I take the 3 bolts off the gear bracket and the cotter pin and Jimmy it out and get it welded or does it got to go to the shop