Fill Valve installation instructions:
1. Shut off water supply to tank. Flush tank and sponge out remaining
water. Remove old fill valve assembly, using pliers if necessary.
2. If you have a bowl cleaning system, carefully disconnect
the tube from the fill valve. Do not disconnect the tube from the
dispenser (if you don't have a cleaning system, continue to Step 3).
3. Disassemble small parts – LOCK NUT, SHANK WASHER and ANGLE
ADAPTER for Valve installation (required); CONE WASHER and
COUPLING NUT for Water Supply Connection (optional–see Step 8).
4. Carefully remove CONE WASHER from center of SHANK WASHER.
Place SHANK WASHER on threaded shank of new VALVE. Place flat
surface against valve.
5. When installed, the critical level mark on the fill valve (identified by
a C.L. mark on the Fluidmaster Fill Valve) should be at least 1"
above the top of the overflow pipe. This is a plumbing code.
6. To adjust the height of the fill valve, twist the threaded shank in or out
of valve body. The height of the valve adjusts from 9 to 14 inches. On
some models, a clicking noise will be heard when adjusting the height.
This is normal.
7. Position valve inside tank. Push down on the valve shank (not the top)
while tightening lock nut. Hand tighten only. DO NOT OVERTIGHTEN or
tank may crack. Make sure float cup does not touch toilet tank walls,
trip mechanism or flush valve.
8. Before continuing, determine the type of water supply connection you
have from the chart on the left and use the appropriate assembly parts
required to properly reconnect the water supply. DO NOT use plumber's
putty to seal these fittings.
9. With correct washers in place (see Step 8), tighten coupling nut. Hand
tighten only. DO NOT OVERTIGHTEN. CAUTION: DO NOT USE CONE
WASHER WITH PLASTIC SUPPLY LINE.
10. If you have a Fluidmaster bowl cleaning system, re-attach tube (“IN”)
to fill valve nipple (see Diagram 2). Be sure toilet tank flushing components
move freely (if you don't have a cleaning system, continue to
11. Remove and discard overflow pipe cap if present. Attach one end of
black refill tube to angle adapter and the other end to nipple located
near top of valve. Attach angle adapter to overflow pipe. Trim refill tube
as necessary to prevent kinking. NOTE: Flow from refill tube must be
positioned just above the overflow pipe. Do not insert refill tube down
into overflow pipe below water level. This will siphon water down the
overflow pipe, which causes the valve to turn on and off as it tries to
keep the tank full. If the angle adapter cannot be used, you may need
the Model 599 Refill Clamp (not included).
12. IMPORTANT: Always clear sand and rust from system. Make sure
water supply is shut off. Remove valve TOP by lifting arm and rotating
top and arm 1/8 turn counterclockwise, pressing down slightly on cap.
13. While holding a container over the uncapped VALVE to prevent
splashing, turn water supply on and off a few times. Leave water
14. Replace TOP by engaging lugs and rotating 1/8 turn clockwise. MAKE
CERTAIN TOP IS TURNED TO THE LOCKED POSITION. VALVE MAY
NOT TURN ON IF TOP IS NOT FULLY TO THE LOCKED POSITION.
15. Turn on water supply. Adjust water to desired level by squeezing water
level adjustment clip and moving FLOAT CUP up or down along stainless
steel link. Check for leaks, then check for proper flush.
IF FILL VALVE WON'T TURN OFF,
• There may be debris at seal – repeat Steps 12-15.
• The seal inside the valve top may be damaged –replace with new
IF FILL VALVE TURNS OFF AND ON DURING PERIODS OF NON-USE,
• There may be a leak at the flapper.
• The tank ball or flapper is misaligned – repeat Step 11.
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