Problematics of residual stresses is known in engineering practice, but it is often forgotten. They are present in each component. Residual stresses can be introduced into the material not only during the manufacturing process, but also when the equipment is used. Every machine system a special approach to its application during operation. In case of non-compliance with its boundary conditions failure can comply damage of components, which may even lead to complete deterioration of the equipment. The aim of the paper is to point out how improper use of equipment affects residual stresses that can lead to its damage. The most used method for determining residual stresses was used - hole drilling method. The practical part deals with the specific application of the hole drilling method on the selected component - the chainsaw guide bar. The next part of the theses is followed by an evaluation of the results and a proposal of a solution that will contribute to a more efficient use of the given structural element and its lifetime.