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.
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Random orbital sanders are designed to be used with specific sized pads, with a precise weight.
Make sure you are using the correct size pad, and that it is in good condition.
Change your backing pad regularly - large chunks of missing pad material will cause imbalance.
For some product ranges, Mirka also offers the myMirka app with a vibration sensor, which helps you monitor vibration levels during working.
Mirka also offers a balancing kit for sanders.
Answer: A wrench is supplied for changing the back-up pad. You can find it in the original packaging of the sander.