Maintenance Instructions; Water Level Adjustment - Toto CST775 Manuel D'installation

1) Shut off the water supply to the toilet.
2) Flush toilet and remove remaining water from tank with a sponge.
3) Remove the water supply connection at the fill valve.
4) Remove old fill valve and use damp sponge to clean ll valve hole in tank.
5) Place new fill valve inside tank hole.
6) Thread mounting nut onto fill valve shank and tighten the nut.
NO TE: Do not overtighten. Be sure to install fill valve in a position that does not
interfere with the trip lever operation.
7) Connect water supply to fill valve shank and hand-tighten only.
NO TE: Do not overtighten. These are plastic parts. Never use pipe dope on any
water supply connection.
8) Attach refill tube to fill valve nipple and clip other end of refill tube to the overflow
pipe.
9) Turn water supply ON and check for leaks outside the tank.
NO TE: As water fills the tank, water is also directed into the overflow tube via the
refill tube. This additional flow of water is critical to refilling your toilet's bowl.
Once the water stops filling the tank, some residual drops of water may drip
from the fill valve. This is NORMAL as these drops will subside.
Depending on the manufacturing plant, you may have one of two of the
following fill valves:
Type A
For Type A Fill Valve:
There are no water level adjustments. The fill
valve has been preset at the factory.
For Type B Fill Valve:
Refer to the water level (WL) setting on the tank
label. Allow the water to fill the tank. Turn the
adjustment screw clockwise in the (+) direction
to increase the water level height (see ill 1).
Turn the adjustment screw counter-clockwise in
the (-) direction to decrease the water level
height. Flush the toilet to verify the correct
water level. Adjust as necessary.

MAINTENANCE INSTRUCTIONS

Fill Valve Installation Procedure

Water Level Adjustment

Type B
Water Level
ill. 1
6
Top of
Overflow
Tube
Water
Level