Hii everyone, going to keep this brief so I don't board y'all and thank you in advance for answering !

I have a cbr 125 2004 and i started hearing a rattle noise but at low rpm for a second and boom goes away then 2-4 second and again did the valve clearance it's alright but I'm no expert i thought it was the chain maybe it got stretched even after 30k only so i replaced it but the noise persists not i took out my cam chain tensioner and saw this 👇🏻👇🏻
👇🏻👇🏻👇🏻
https://youtu.be/GC3wl5c3yNc?si=REa2jxLhW6pPqT3a

is that tolerance normal ?

could that be the problem to rattling?

and if so can i make a iron one (copy of this one but i dont trust aluminum so iron) with a M12 screwe ( should i thread bigger thread id M12 or smaller M12) at the center with a polished top and a locking nut

Sorry for my english it's not my nativ i hope i wrote everything right and again thank you all !

And yes the reason why i don't take it to the shop is because here in Serbia there aren't that many motorcycle mechanics at least close to me. I'm a student and do part time but i love this motorcycle i want a bigger one too but for now i want to learn this little one cylinder and after my study's get an bigger one but can't forget this little fella so i want to learn more and more about motorcycles all i did for now was a lot and proud of that but kinda got stuck here so yee

 

I had the same issue and 4 days later my engine blew up.. we will open it now to see what happened If yours do that don't drive it.





192.168.100.1 192.168.1.1

 

Soo any updates on what is happening ?

 

i have the same problem sadly when i increase the rpm it gets louder specifically near 5k rpms but my model is 2012
Did you solve the problem or maybe find a solution
Pozdrav iz makedonije

 

Heyy replaying a little late but yes i did

the thing i was talking about in the post about the costume cam chain tensioner I've made it (i sent a guy my original cam chain tensioner and described to him that i need the sam thing with a screwe in a middle and i bought a screw polished the head like on the original cct and that's it) and it works perfect didnt have any issues with it after that i went with M12 standard 1.0 and a double nut to lock it and yea that's it

if you need any help message me i think i have a picture of it Pozdrav iz Srbije