It is advisable to clean your tool after each use. If your tool is particularly dirty or subject to rusting after exposure to moisture, do not delay cleaning.

After cleaning, it is advisable to oil the tool so as to protect it from corrosion. The oil will also unjam the tool.

It is advisable to sharpen your tool at least once a day, but if you feel that your tool is not cutting as well as usual, sharpen it right away!

It is advisable to dismantle your tool on a regular basis, but at the very latest when it appears to be jammed.

When the blade and anvil-blade no longer cross and the anvil-blade is badly damaged, it is advisable to change it.

When the blade and the anvil-blade no longer cross, or when the blade is badly damaged, it is advisable to change it. Regulate the working of the blade and anvil-blade by adjusting the tightening of the nut. The blade should rub against the anvil-blade o