Yamaha YGRD-2500 Owner's Manual page 7

Assembly
For safety reasons, assembly should be performed with at least two
persons and in a sufficient amount of space.
To protect the instrument from damage, we recommend that you as-
semble it on a carpet, soft cloth, etc., placed on a flat surface.
1
Connect the pedal stay assembly to both legs (low register and high register sides).
* Make sure that the slide guide fixing bolts on both legs are tightened firmly before performing this opera-
tion.
CAUTION
1-1
Position the pedal stay assembly and low and high register side leg assemblies as shown in the
illustration below.
Leg
(low register side)
Low register side
18
Do not loosen the slide guide fixing bolts at this point. Doing so will result
in the legs suddenly rising. This can be extremely dangerous!
Leg (low register side)
Performer side
Slide guide fixing bolts
Leg
(high register side)
Pedal stay assembly
Leg (high register side)
High register side