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Before adjusting the serpentine belt on your Toyota Yaris, it is important to refer to the manufacturer's guidelines to determine the specific requirements. The exact specifications can vary depending on factors such as model year, engine type, and trim level, so it is essential to have this information. Once you have identified the correct tension setting, the process of adjustment is relatively straightforward. However, it is important to use the appropriate tool, the Denso BTG20 Belt Tension Gauge, to ensure accuracy. While there are alternatives available, it is recommended to follow the manufacturer's specifications for the best results. After adjusting the tensioner pulley, the drive belt squealing issue should be resolved.
To properly adjust the serpentine belt on a Toyota Yaris, you will have to manipulate the tensioner.
To tighten the serpentine belt on a Toyota Yaris, you need to find the tensioner bolt which is situated inside the hole on the belt pulley.