Yamaha YTR-988 Manuale d'uso - Pagina 11
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● Rotor maintenance
(Rotary trumpets only)
1.
Remove the rotary valve cap and apply some
rotor spindle oil to the place to the spindle in
the center of the rotor.
Rotor spindle oil
2.
Apply some rotor spindle oil to point where
the rotor rotates. Replace the rotary valve cap
and move the lever a few times to distribute
the oil evenly.
Maintenance
● Valve slide maintenance
1.
Apply a thin coating of slide grease to the main
tuning slide, 2nd valve slide, and valve slides
that are not equipped with a slide trigger.
2.
Slide the main tuning slide back and forth a
few times to distribute the grease evenly.
3.
On the 1st and 3rd valves, which are equipped
with slide triggers, apply a small amount of
tuning slide oil to the tuning slides.
Tuning slide oil
3rd Valve Slide
Slide grease
Main tuning slide
Main tuning slide
Apply here.
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