Toto toilet CT774S. The metal flush handle has fallen completely out of the tank. It's easy enough to slide it back in and push the metal rod into it inside the tank, but it isn't held securely in any way and slides right out again when it is used. It seems that there needs to be something to secure the two parts together but I see no sign of anything like that. What am I missing? Thanks for any help.

It appears that you are missing the nut that goes inside the tank. Look around inside the tank for it. If you do not find it, I suggest you take the lever to the nearest home center and try to find a replacement nut, or a cheap handle you can use the nut from. Most flush handle nuts are left-hand (reverse) threaded. I searched the internet for the part number for the flush handle assembly ( THU141#XX) and the price is nearly $70.00. Good Luck

I know exactly eileenm was talking about. The handle on one of our Toto toilets was falling off about once a month for the past several years. I would push it back on, but it would fall off after a while. I finally had enough and came up with a solution that works pretty well. I know it's been a while since the last post, but I thought I'd put my solution up here in case someone else might have the same problem.

The particular design of the flush handle and rod does not have any bolt holding the rod into the handle. Figure 1 below shows the general setup of the rod and handle when it's off the tank. The brass rod fits into the metal handle and is held there by friction. There is only one way to assemble the parts and have the toilet flush.

Figure 1.

Figure 2 shows the end of the rod that is push-fit into the handle. It appears that the system is designed so the crimp in the rod will be inserted into the handle and the expanded part of the crimp will hold the rod in the handle (arrow) because it is slightly wider than the rest of the rod.

Figure 2.

This would work OK except for one problem. There is a tab on the handle (Figure 3) that prevents the rod from being fully inserted into the handle. (It could be rotated 180 degrees and be fully inserted, but then the rod would be oriented incorrectly to activate the flapper valve.)

FigToto toilet CT774S. The metal flush handle has - 2_11_2013_6_51_46_am.jpgn>

The solution is to remove the tab. The tab on the handle can be removed easily by breaking it off with pliers (Figure 4). You could also hacksaw iToto toilet CT774S. The metal flush handle has - 2_11_2013_6_52_54_am.jpgn>

Figure 4.

Once I removed the tab, I was able to shove the rod completely into the handle. It is a tight fit, and required a vice or C-clamp to push it fully into the handle. Figure 5 shows the rod when it is inserted into the handle, and figure 6 shows it fully inserted. Notice the rod now sits about 1/8 inch deeper into the handle because the tab is removed. I wrapped the handle in a rag to prevent scratching, and used a vice to push the rod into the handle.

Figure 5. - before pressing the rod fully into the handle

Figure 6. - after the rod is pressed into the handle

After performing these steps, the rod is now firmly inserted into the handle and will not come loose. At this point, I re-assembled the rod and handle assembly back onto the tank. It's been working for quite a while with no problems.

I hope this helps...