2. If replacement is necessary, gently pry «old» gasket and remove it from the recess (pic. 18.2). Be very careful not to damage the sealing surface inside the cover.
Pic. 18.2. Using a small screwdriver, carefully pry off the old gasket. Be careful not to damage the lid
3. Install a new gasket in the notch on the cover.
4. Install the cover and then remove it and check that the gasket provides a seal around the perimeter.