تو سایت زیر برای تنظیم زنجیر مطلب زیر رو نوشته چون اصطلاحات فنی موتور رو بلد نیستم خیلی متوجه نشدم. کسی می تونه توضیح بده؟
[فقط کاربران می توانند لینک هارا ببینند. ]

A quick and dirty way to check the tension on your chain can be done off the bike stand. Put your body weight over the back of the bike and then pull on the swingarm to find the tightest point for the chain. It should be where the rear axle, swingarm pivot and countershaft (front sprocket) are all in a straight line. Once you find this, you want to check for a tolerance of 1/4- to 1/2-inch of play. There are other more technical ways to do it, but this method used by race team mechanics out on the field should get you to a safe operating range.