PART# 4-753, Grev. 6, 10/13
FLUIDMASTER
400LS
®
LEAK SENTRY FILL VALVE
INSTALLATION INSTRUCTIONS
WARNING
DO NOT USE IN-TANK DROP-IN TOILET BOWL CLEANERS CONTAINING BLEACH OR
CHLORINE. Use of such products will: (1) RESULT IN DAMAGE to tank components and MAY
CAUSE FLOODING and PROPERTY DAMAGE and (2) VOID FLUIDMASTER WARRANTY.
Fluidmaster Flush 'n Sparkle Toilet Bowl Cleaning System is recommended for those
choosing to use in-tank bowl cleaners and WILL NOT VOID the FLUIDMASTER WARRANTY
because it will not damage the components. DO NOT overtighten nuts or tank/bowl may crack. Always use quality
Fluidmaster parts when installing or repairing. Fluidmaster will not be responsible or liable for use of non-Fluidmaster parts
during installation or repair.
LIMITED FIVE-YEAR EXPRESS WARRANTY
Subject to the "Exclusions" set forth below, Fluidmaster Inc. promises to the consumer to repair, or at the option of Fluidmaster Inc. to replace any
part of this plumbing product which proves to be defective in workmanship or materials under normal use for five years from the date of purchase. All
costs of removal, transportation and reinstallation to obtain warranty service shall be paid by the consumer. During this "Limited Five Year Express
Warranty," Fluidmaster Inc. will provide, subject to the "Exclusions" section set forth below, all replacement parts free of charge, necessary to correct
such defects. This "Limited Five Year Warranty" is null and void if this plumbing product has not been installed and maintained in accordance with all
written instructions accompanying the product, and if non-Fluidmaster Inc. parts are used in installation.
EXCLUSIONS: FLUIDMASTER INC. SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING COSTS OF INSTALLATION, WATER
DAMAGE, PERSONAL INJURY OR FOR ANY DAMAGES RESULTING FROM ABUSE OR MISUSE OF THE PRODUCT, FROM OVERTIGHTENING OR FROM FAILURE
TO INSTALL OR MAINTAIN THIS PLUMBING PRODUCT IN ACCORDANCE WITH THE WRITTEN INSTRUCTIONS, INCLUDING USE OF NON-FLUIDMASTER
PARTS. DO NOT USE IN-TANK DROP-IN TOILET BOWL CLEANERS CONTAINING BLEACH OR CHLORINE. USE OF SUCH PRODUCTS WILL RESULT IN DAMAGE
TO TANK COMPONENTS AND MAY CAUSE FLOODING AND PROPERTY DAMAGE. USE OF SUCH PRODUCTS WILL VOID THIS WARRANTY.
Preparing the Fill Valve for Installation
2
Fill Valve Assembly Parts
A) Refill Clip
Place shank
B) Refill Tube
F
washer onto
C) Shank Washer
threaded
D) Locknut
B
shank of fill
G
E) Threaded Shank
valve. Flat
F) Roller Clamp
side up.
G) Hose Clamps
A
C
E
Shank
Washer
D
Threaded
Shank
Attach Water Supply Connector
4
Inspect water supply connector. Replace it if it is worn
or over 5 years old to prevent flooding and property damage.
release and unlock float cup so tank will fill. With water
supply on, submerge the float cup under the water for 30
A. Attach water supply coupling nut to
seconds.
fill valve. Turn coupling nut clockwise
A
by hand until tight.
With water turned on, set float cup to desired level, by turning
water level adjustment screw. When adjusting float cup, flush
WARNING: Do not over tighten the
tank first. Then make adjustment while tank is filling.
nut as it could damage fill valve or
coupling nut, resulting in flooding and
To adjust tank water, turn adjustment screw clockwise to raise
property damage. Fluidmaster Click
water level or counter clockwise to
Seal
connector is recommended: A
lower water level. Once adjusted,
®
perfect seal every time without over
flush toilet and check new level.
tightening.
Repeat if necessary.
B. Turn on water supply and check
HINT: When you twist adjustment
for leaks. If you find leaking at bottom
screw 8 times - float moves 1/2".
B
of tank, turn nut just enough to stop
leaking. Then flush toilet to check.
Code Compliance
8
Once fill valve is installed, ensure overflow pipe and water level
of tank are correctly set.
1. THE TOP OF OVERFLOW PIPE (A) must be minimum of 1" below TANK
LEVER HOLE (B).
2. WATER LEVEL (C) is set below
D
top of Overflow Pipe (Fluidmaster
B
recommends 1/2").
3. THE CRITICAL LEVEL MARK / C.L.
WATER
LEVEL
Mark (D) identified by C.L. on fill valve
A
must be positioned 1" above top of
C
overflow pipe. This is a requirement of
the Universal Plumbing Code.
OVERFLOW
FILL
PIPE
VALVE
Code Compliance helps protect your
home & drinking water supply.
– Please keep a copy of these instructions on the property in which the product was installed.
400LS WATER-SAVING FEATURES
Prevents wasteful refills in leaky tanks.
The Leak Sentry device alerts you to a tank leak, typically caused
by a faulty flapper. If there is a tank leak, the float cup will not drop to
refill the tank until the tank lever is pushed. On the first flush attempt,
the valve will simply refill the empty tank; only then will you receive a
complete flush. This will continue to occur until the tank leak is fixed.
The Adjustable Refill allows you to adjust the amount of water
going into the bowl, eliminating water waste due to the bowl being
overfilled.
IMPORTANT: A flapper with a plastic or metal chain is
recommended for the Leak Sentry to maintain its settings. Flappers
with nylon or vinyl straps will stretch and cause Leak Sentry to work
improperly. (Replace with a flapper like the Fluidmaster 501 or 502).
DO NOT USE
Position fill valve in tank, but do not fully install yet. Top of fill valve MUST
MEASURE
HEIGHT ONLY:
be set 3" above overflow pipe. This will automatically place CRITICAL
DO NOT INSTALL
LEVEL MARK / C.L. Mark, 1" above the top of overflow pipe. Remove fill
valve from tank to adjust height.
1
"
"C.L"
MARK
Adjust height of fill valve by holding lower shank with right hand and
top of valve with left hand. Twist the lower shank counter clockwise to
LOCK
RING
increase valve height and clockwise to decrease valve height. You should
hear several "clicks". Place valve in tank and check height again. THE
CRITICAL LEVEL MARK, identified by C.L. on valve, MUST be positioned
1" above top of overflow pipe. This is a requirement of the Universal
Plumbing Code.
Do not move lock ring. It holds the valve body and shank together under
pressure. Do not interchange body with old shank as leaking can occur.
Adjusting Tank Water Level
5
6
IMPORTANT: Pull Leak Sentry chain, this will
Turn off water and ensure flapper chain
is set correctly: lift tank lever all the way
up inside tank. Hold tank lever there. Pull
flapper chain tight so the flapper is lifted
as high as it can go and attach chain to
hole in lever directly above flapper. Make
sure flapper chain is straight.
Make sure flapper is closed on seat.
If not, you may need to lengthen the
flapper chain by a link or two to allow
flapper to close and seal tank.
IF FILL VALVE DOES NOT TURN ON, WILL NOT TURN OFF, OR WILL NOT REFILL THE TANK AFTER THE FLUSH
• Pull Leak Sentry chain, then release to unlock float cup, so tank will fill (See "WATER-SAVING FEATURE: HOOKING UP THE LEAK
SENTRY CHAIN").
• Tighten the Leak Sentry chain (See "WATER-SAVING FEATURE: HOOKING UP THE LEAK SENTRY CHAIN") a few chain loops at a time
until valve refills tank after flush.
• Remove top cap and check for debris. If you find debris, or flow is weak: Inspect lower section of fill valve for partial blockage. Partial
blockage may be at shut off valve or in water supply line (See "REMOVING THE VALVE CAP ASSEMBLY & FLUSHING OUT DEBRIS").
• If fill valve has been in use for some time and/or float cup does not drop when flushing tank, replace seal with a genuine Fluidmaster
242 seal (See "IF REPLACING SEAL").
IF FILL VALVE TURNS ON AND OFF BY ITSELF
• The tank is leaking water and the Leak Sentry chain is not set properly (See "WATER-SAVING FEATURE: HOOKING UP THE LEAK
SENTRY CHAIN"). Try stopping the leak by resetting both flapper and Leak Sentry chain.
IF WATER LEVEL IN BOWL IS TOO LOW
• Make sure the refill tube is supplying water down overflow pipe.
• Water level in tank may be too low. Raise water level to 1/2" below top of overflow pipe (See "ADJUSTING TANK WATER LEVEL").
You may have to lengthen the fill valve in order to increase the water level in tank (See "PREPARING THE FILL VALVE FOR
INSTALLATION").
• Flapper may be closing too soon. Give flapper chain approximately 1/2" of slack.
TANK
ROLLER CLAMP
LEVER
REFILL TUBE
HOSE CLAMP
REFILL CLIP
FLOAT
CUP
OVERFLOW
LEAK SENTRY
DEVICE
PIPE
LOCK RING
FLUSH
FILL
VALVE
VALVE
FLAPPER
TANK SHOULD
LOOK LIKE THIS
SHANK
LOCKNUT
WHEN SET UP IS
WASHER
COMPLETE
Installing New Fill Valve
3
Water-Saving Feature: Hooking Up the Leak Sentry Chain
Flapper Chain Hook-up
Leak Sentry Chain Hook-up
Lift tank lever all the way up inside tank and hold it there.
Pull Leak Sentry chain until it lifts the float cup all the way
up the fill valve shaft. Then connect chain & clip with no
slack in chain to the tank lever.
NOTE: Do not cross Leak Sentry chain and flapper chain. If
lever has only one hole, then attach to same hole.
Testing Leak Sentry
Turn on water. Let tank fill up and stop. Simulate a leak by
slightly lifting flapper chain only to allow 3" or 4" of water
to slowly drain from tank. Fill valve should not turn on, but
remain locked and stay off.
If test fails go to Troubleshooting section. Make sure chain
is free, not tangled or caught.
Removing Valve Cap Assembly, Flushing Out Debris, Replacing Seal, & Replacing Valve Cap Assembly
Removing Valve Cap Assembly
Turn off water supply & flush
out tank. Push float up with
right hand (see picture). Grip
and hold shaft under float with
right hand. With left hand,
twist cap and lever counter
clockwise 1/8th of a turn to
unlock the top cap. Pressing
down on top may be helpful
with older valves. Let cap
assembly hang on float cup.
TOOLS
NEEDED
Scissors
Sponge
PARTS
IN THIS KIT:
C
(1) Fill Valve with Leak Sentry
(1) Shank Washer
(1) Locknut
(1) Refill Tube
B
(1) Refill Clip
(1) Roller Clamp
(2) Hose Clamps
A
Place fill valve in tank. Make sure lid will sit on top of tank without touching valve.
Align fill valve nipple to face center of tank. Press down on shank from inside tank
while tightening locknut.
Hand-tighten only. DO NOT OVER TIGHTEN. Over tightening may crack the fill valve
or tank causing flooding. Make sure the float cup does not touch the tank walls or
tank lever and flush valve.
Attach one end of refill tube to refill clip. Place clip on right side of overflow pipe.
Attach other end of tube to nipple on fill valve with a slight arch (See drawing to the
right). Cut tube as necessary.
WARNING: Do not shove refill tube down overflow pipe. This may cause significant
water waste.
Squeeze hose clamp. Slide to end of hose and release.
7
appears to be full but continues to fill, valve may be overfilling
bowl causing excess water to siphon down trapway. Adjust
amount of water going down into the bowl as follows: Fill the
bowl with a gallon of water. Wait 1 minute until the bowl water
level recedes down and stops. With a pencil, draw a line at the
top of the water level in bowl. Now flush the toilet. If the valve
is still filling and the water is up to the line in the bowl, then the
amount of water going into the bowl is too high and needs to be
adjusted. Adjust the refill by turning the roller clamp with thumb
to the next lower number. Flush the toilet; adjust until water level
in bowl is at the pencil mark when the fill valve shuts off. If valve
FILL VALVE
SHAFT
shuts off and bowl is not full, adjust by turning the roller clamp
to a higher number. Repeat until water in bowl is up to line. "O"
on roller clamp equals no refill to bowl.
Flushing Out Debris
Hold cup upside down over
uncapped valve to prevent
splashing. Turn water supply
on and off a few times. Turn
water supply off when putting
cap back on valve.
242
SEAL
30800 Rancho Viejo Road, San Juan Capistrano, CA 92675
www.Fluidmaster.com • 800-631-2011
Contact Fluidmaster for troubleshooting help or visit www.fluidmaster.com
M-F 5:30 am - 5:00 pm PST.
Remove Old Fill Valve
1
Remove tank lid. Use pencil to mark water level of
tank. Then follow steps A-C.
A. Turn off water supply (Clockwise). Flush toilet and remove
excess water from tank with sponge.
B. Remove water supply coupling nut. Remove locknut from
under tank.
C. Remove fill valve from tank.
Correct set up of refill tube
and refill clip to overflow pipe
REFILL HOSE
REFILL CLIP
NIPPLE
Water-Saving Feature: Roller Clamp
Check bowl water level by flushing toilet. If bowl
Hose
Clamps
If Replacing
Replacing Valve Cap
Seal
A. Place cap assembly on top of gray
valve body by aligning cap arm and
adjustment rod next to refill tube.
B. Press down on top cap while rotating
top & arm clockwise to locked position.
SEAL
LOCATION
If Replacing Seal:
Use only a genuine
A
B
Fluidmaster 242 seal.