Yamaha MQ8400 Series Drums

Part Names

• A: Center bar unit
• B: Joint unit
• C: Angle stopper

Diagram showing the main structural components of the drum stand. Component A, the center bar unit, is depicted as a central horizontal bar. Component B, the joint unit, appears to be a connector that attaches to the center bar. Component C, the angle stopper, is shown as a small piece that likely limits the movement of the joint unit.

Included Items

• [item a]: Wrench (10 mm)
• [item b]: High-tension drum key
• [item c]: Owner's Manual (this document)
• [item d]: PRECAUTIONS
• [item e]: Service location list

This diagram displays the accessories provided with the drum set. Item 'a' is a 10mm open-end wrench. Item 'b' is a drum key, typically used for tuning. Item 'c' is the owner's manual itself. Item 'd' represents a separate document for precautions, and item 'e' is a list of service locations.

Adjusting the Position of the Tenor Drum

Adjusting the forward/backward position

The distance between the player and the instrument can be adjusted by sliding the center bar unit (A) forward/backward.

1. Loosen bolts 1 (two on the left and two on the right) of the center bar unit (A) with the included wrench.
2. Slide the center bar unit (A) forward/backward to the desired position.
3. When the center bar unit is in the desired position, tighten bolts 1 (two on the left and two on the right) to secure the unit.

The illustration shows the center bar unit (A) being adjusted. Bolts labeled '1' on the unit are loosened with a wrench. The unit is then shown sliding horizontally along a track to change its position relative to the rest of the stand.

Adjusting the left/right position

The left/right weight distribution can be adjusted by sliding the joint unit (B) to the left/right.

1. Loosen bolt 2 of the angle stopper (C) (back of the joint unit when viewed from the player's location) with the included wrench.
2. Slide the joint unit (B) between the left and right stoppers 3 to the desired position.
3. When the joint unit is in the desired position, tighten bolt 2 of the angle stopper (C) to secure the unit.

NOTE: When the instrument is shipped from the manufacturer, the center of gravity is set to the left side, where the shell diameters are larger. In case of imbalance, slide the joint unit (B) to the right.

This diagram illustrates the adjustment of the joint unit (B). The joint unit is shown positioned between two stoppers, labeled '3', on the angle stopper component (C). Bolt '2' is indicated as the fastener to be loosened and tightened to secure the joint unit's position.