Pre-maintenance

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Pre-maintenance

Pre-maintenance

Polishing

Before

磨く-作業前

After

磨く-作業後

Use a nylon brush to polish the surface until a metallic luster appears.
Even if the blackish or burnt brown color is not completely removed, it can be used if surface debris and scale are removed and the surface is smooth to the touch.

Cleaning the sealing surfaces

Before

剥がす-作業前

After

剥がす-作業後

Use a scraper to securely remove the remaining peeled gasket from the sealing surface.
Remove the gasket in a scraping manner so as not to scratch the sealing surface.
Be careful not to strike the gasket, as dents may cause leakage.

When the orifice is difficult to remove (e.g. JX series)

オリフィスがはずしにくい場合

Place the tip of a flat-blade screwdriver or similar tool on a flat surface away from the sealing surface of the orifice against and tap lightly to push the orifice out.
In this case, be careful not to touch the sealing surface of the orifice.