Jump to content
  • Sign up now

    Registration is quick and easy 

Chain problems with YBR 125


Recommended Posts

Hello all!

So i recently fitted a new drive chain and sprocket set, insuring to the align the rear wheel, properly lubricate the chain and maintain the correct amount of chain slack.

However, whenever I release the throttle a strange slapping / loud clicking noise comes from what sounds like it could be the chain. The faster I am going when i come off the throttle, the louder the noise is. Whenever I apply any throttle, the noise is none existent.

What would be some other potential causes of this and what would you propose to be a good course of action?

A little note that might be useful, the replacement chain was somewhat smaller than the original. I had plenty of free play in the rear wheel/swingarm adjusters but it did mean that when i moved the rear wheel in, the drum brake was forced to rotate slightly. There's a supporting bar holding the drum brake in place alas rotation was necessary.

Hopefully someone can get a good grip on what i'm describing, first time posting here so sorry it's a bit wayward.

Warm wishes


Link to comment
Share on other sites

Hi and welcome, make sure one of your rear sprocket bolts hasn't worked loose and is hitting the chain guard . This happened to me recently and I could only hear it when I throttled back . Do you mean that the new chain has less links or do you just mean that it isn't heavily stretched ?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

Terms of Use Privacy Policy Guidelines We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.