2+1 years
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All Mirka power tools have a standard two-year warranty. Get an additional 1 year of warranty free of charge by registering your tool within 30 days of purchase.
Changing your backing pad when necessary will keep the vibrations of your sander to the minimum. Large chunks of missing pad material will cause imbalance.
If you are using a pad saver, make sure to counter balance it correctly.
Answer: A wrench is supplied for changing the back-up pad. You can find it in the original packaging of the sander.