자전거 체인 교체 시기, 체인 수명을 알아보자( 자전거 체인 마모 체크 하는 방법.)

Before we replace the chain, we need to find out when to replace it.
Details are provided on how and why they should be replaced.

I tried not to be bored as much as possible for the viewers, but it's not enough yet.ᅲ

However, I always thank the subscribers for watching. ^^

If you have any questions, feel free to leave a comment.
I'll give you an answer. ^^

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• #cycle_chain_slipping
• #cycle_chain_slipping_malayalam
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• #bicycle_chain_replacement_guide
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