Fluidmaster 400A Manual

GETTING STARTED

TOOLS NEEDED

PARTS OVERVIEW

STEP 1: PREPARE TANK

A: TURN OFF WATER

B: DRAIN WATER
Flush toilet to drain most of the water from the tank.

C: USE SPONGE OR TOWEL TO SOAK UP
EXCESS WATER IN TANK

STEP 2: REMOVE OLD FILL VALVE

A: REMOVE CONNECTOR Remove water supply connector from bottom of fill valve by twisting connector nut to the left (clockwise).

B: REMOVE OLD LOCKNUT
Below tank, twist locknut to the left (clockwise) to remove from fill valve.

Pliers
(Optional)

C: REMOVE OLD FILL VALVE Drain any excess water into bucket by removing fill valve from tank.
(Pull fill valve up)

Bucket
(Optional)

STEP 3: ADJUST HEIGHT OF NEW FILL VALVE

A: TWIST FILL VALVE TO ADJUST HEIGHT Top of fill valve cap should measure roughly 3" above top of overflow pipe.

STEP 4: INSTALL NEW FILL VALVE

A: INSTALL SHANK WASHER Pull up to top of shank.
* Place shank washer onto threaded shank of fill valve. WIDE SIDE UP.

B: PUSH REFILL TUBE ONTO REFILL PORT FIRST

C: ATTACH REFILL CLIP TO OVERFLOW PIPE

D: INSERT FILL VALVE
Position refill tube to face overflow pipe.

E: INSTALL LOCKNUT
Screw locknut to the right (counterclockwise) onto fill valve shank (below tank)

F: ATTACH REFILL TUBE TO REFILL CLIP
Note: If refill tube is too long, cut tube.

STEP 5: FINISHING STEPS

A: ATTACH WATER SUPPLY CONNECTOR TO FILL VALVE
Twist to the right (counterclockwise)

B: TURN ON WATER Check for leaks. (See Troubleshooting for leak solutions)

C: WATER LEVEL
After the tank stops filling, water level should fill the tank to roughly ½ inch below top of overflow pipe to ensure a proper flush.

STEP 6: FINE-TUNE TANK WATER LEVEL

A: FLUSH THE TOILET TO CHECK THE TANK WATER LEVEL
After the water stops filling the tank, the water level should be roughly ½ inch below the top of overflow pipe to ensure a proper flush.

B: WATER LEVEL IS TOO LOW
Turn the tank water level adjustment screw clockwise to raise the float. Flush to reset water level.

WATER LEVEL IS TOO HIGH
Turn the water level adjustment screw counterclockwise to lower the float. Flush to reset water level

STEP 7: FLUSH THE TOILET

A: FLUSH THE TOILET
If you're satisfied with the flush, YOU'RE DONE!

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Still not working exactly right?

See the next page for Troubleshooting.

TROUBLESHOOTING

IF THE FILL VALVE:

• DOES NOT TURN ON
• WON'T TURN OFF
• WON'T REFILL TANK

REMOVE CAP AND CHECK FOR DEBRIS

A: Turn off water supply.

B: Flush toilet.

C: With right hand push float up, grip and hold shaft under float.

D: With left hand twist cap and lever arm counterclockwise to unlock cap. Let cap hang on float cup.

E: Hold empty cup upside down over uncapped valve to prevent splashing.

F: Turn water supply on and off a few times.

G: Turn water supply off.

H: Replace valve cap.

• Place cap assembly on top of gray valve body by aligning cap arm and adjustment rod next to refill tube.
• Press down on top cap while rotating top & arm clockwise to locked position.

See Our Troubleshooting HOW-TO VIDEO http://bit.ly/2yAdZn7

IF THE FLOAT DOES NOT DROP WHEN FLUSHED
REPLACE FILL VALVE SEAL

A: Remove cap.

B: Replace seal with a genuine Fluidmaster 242 Seal.

C: Replace valve cap.

• Place cap assembly on top of gray valve body by aligning cap arm and adjustment rod next to refill tube.
• Press down on top cap while rotating top & arm clockwise to locked position.

IF THE FILL VALVE TURNS ON AND OFF BY ITSELF
CLEAN FLAPPER AND DRAIN SEAT

A: The tank is losing water, clean the flapper and drain seat for a better seal.

B: Replace flapper.

C: If leak continues after replacing flapper, replace flush valve (507AK, or 540AKR) or repair flush valve seat (555C).

IF WATER SUPPLY CONNECTOR IS LEAKING
A: Replace water supply line.

WATER LEVEL IN BOWL IS TOO LOW

A: WATER FROM REFILL TUBE MUST FLOW THROUGH OVERFLOW PIPE
Make sure the refill tube is supplying water down overflow pipe.

B: WATER LEVEL IN TANK MAY BE TOO LOW
1/2" below top of overflow pipe is recommended.

C: FLAPPER MAY BE CLOSING TOO SOON
Give flapper chain approximately 1/2" of slack.

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.

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.