Yamaha YFH631 Manuale d'uso - Pagina 12
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Maintenance
■ Twice Yearly Maintenance
● Cleaning the instrument
1.
Make a brass soap water solution.
Prepare a brass soap water solution using be-
tween 10 to 15 parts warm water (30 ° to 40 ° C)
and 1 part brass soap. Before putting the in-
strument into the soap water solution, remove
the pistons, valve casing covers, slide valves.
2.
With the instrument removed from the water,
apply some soap water solution to a flexible
cleaner and use the cleaner to clean the inside
of the instrument's pipes.
Flexible cleaner
3.
After cleaning the instrument, use clean water
and thoroughly rinse out the brass soap water
solution. After that, apply valve oil and slide
grease and reassemble the instrument.
24
● Cleaning the mouthpiece
1.
Dip the mouthpiece brush in the brass soap
water solution and clean the mouthpiece
throat with the brush. Rinse the mouthpiece
out with clean water.
● Rotor maintenance
(Rotary trumpets only)
1.
Apply some lever oil to the lever shaft.
Lever oil
Mouthpiece brush