How to block and unblock a LinkedIn user. To block a user on LinkedIn, navigate to the person's profile and click the drop-down menu next to the button in the top section of the member's profile (this button may have different names depending on your account).
Time is perhaps more important than miles, in the life of a timing belt. Seven years is the maximum life of the timing belt, recommended by most manufacturers. For instance, even if the engine has only 30,000 miles, but is seven years of age, the belt should be replaced.
A timing chain is a major component used to keep an engine's timing in sync, and replacing it is often an essential part of automobile maintenance. Timing chains typically last longer than timing belts and are preferred by some automakers for their durability.