Jupiter LOW BRASS Manual De Instrucciones página 14

2. When it is necessary to lubricate the valves,
apply valve oil using to the following procedure:
Step 1.
Lubricate only one valve at a time.
Step 2.
Carefully unscrew the top valve cap, and
partially remove the valve from the casing.
Step 3.
Apply a few drops of valve oil to the valve
surface.
Step 4.
Insert the valve back into the casing. Turn the
valve slightly to ensure the valve guide is properly
locked into position.
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