Will my warranty be affected if the periodic service is done by a non - Yamaha dealer?

No. Warranty covers the unit for manufactured defects. The quality or lack of periodic service has no influence on whether a failure is a manufactured defect or not. Warranty doesn't cover failures caused by faulty workmanship by others. We recommend you use a Yamaha dealer. They are factory trained, have the necessary special tools and up to date information.

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