When we buy new device such as Hitachi WR 22SA we often through away most of the documentation but the warranty.
Very often issues with Hitachi WR 22SA begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Impact Driver Hitachi WR 22SA is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Impact Driver on our side using links below.