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楽器 Yamaha YBB-841のPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。Yamaha YBB-841 31 ページ。 Alto (tenor) horn/baritone/ euphonium/tuba/sousaphone

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Before You Play

NOTICE

Be careful not to hit and dent the instrument or apply unreasonable force to it, since the metal parts

are very thin.

 Applying Oil

Apply oil to the pistons

Unscrew the valve cap and pull the piston

straight out of the valve casing until about half

of the valve piston is exposed.

Apply about 10 drops of valve oil on the pis-

ton.

Valve oil

* Do not apply too much oil.

Slowly return the piston into the valve casing.

At this time, make sure the valve guide fi ts into

the slot inside the valve casing. After the valve

cap is tightened fi rmly, move the piston up and

down a few times to evenly distribute the oil

over the piston.

* Each piston fi ts into its corresponding casing.

Make sure the number stamped on the piston

matches the number stamped on the casing before

returning the piston into the valve casing.

* Th e pistons must be oiled to function properly

and smoothly.

* As for certain products (YCB-623, etc.), there is

one small hole on the side of each piston to allow

air in the valve case to escape or to maintain the

rotation angle of each piston. Th is is a vent hole

and is not used for lubrication.

Remove the valve cap and apply some rotor

spindle oil to the spindle and in the center of

the rotor.

Backside of the

instrument

Piston

* Do not apply too much oil.

Apply some rotor spindle oil to the rotor spin-

dle and its receiver. After closing the valve cap,

move the lever a few times to distribute the oil

evenly.

Receiver

Rotor spindle

* Do not apply too much oil.

Vent hole

Applying oil to the rotors

(Rotary Tuba Only)

Rotor spindle

Instrument's front

Rotor spindle oil