If a disc error occurs, you may see the following error messages.

Main Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages.
Do not use a magnet to remove the check balls, it may magnetize the check
balls. ...
Maintenance
...
List of Categories
* Stored in “Fav. Subcategory” by factory default. ...