Mercury E4FZ-8620-C V-Belt

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The accessory drive belts, also known as V-belts or fan belts, situated at the right end of the engine, play a crucial role in engine and accessory operation. Regular checks and adjustments are necessary due to their susceptibility to tension-related issues and deterioration over time. The number and type of belts depend on the installed accessories, and a flashlight inspection helps identify potential problems like separation, cracks, wear, and glazing. Tension checks can be done with a special gauge or a "rule-of-thumb" method using a straightedge and ruler. Periodic adjustments involve loosening locking and pivot bolts for the accessory and using tools like a breaker bar or open-end wrench for tensioning. Replacement follows similar adjustment procedures, ensuring proper engagement in pulley grooves, and it's advisable to replace all belts simultaneously. Old belts can be used for direct comparisons when purchasing new ones, emphasizing length, width, and design match. Lastly, when replacing V-ribbed drive belts, proper engagement in pulley grooves is essential for optimal performance.