Brother GTX-4 Service Manual page 305

(30) Shake the cartridge 100 times side to side to stir the ink.
<IMPORTANT>

The white ink cartridge should be held horizontally when shaking it.

Holding the white ink cartridge upside down or shaking it too roughly could break the ink pouch.
<NOTE>

Wear the provided gloves when performing this task.

When the remaining ink level becomes approximately 5.9 in. (15 cm), shake the cartridge with its cover open and with the
edge of the ink pouch slightly winded, to make the ink easier to stir.
White Ink Cartridge
Shake 100 times (for approx. 50 seconds)
(Swing distance should be approx. 2 in. (5 cm).
Increase the swing distance when the remaining
ink level becomes low.)
Disassembly / Replacement / Adjustment
Edge of the rib
Ink pouch
6-114
Remaining ink volume should
be approx. 5.9 in. (15 cm)
X0194