Looking for directions to replace the rain sensor washers in a Toro TWRS wireless rain sensor

check the way the system is wired up as there appears that that is where the problem is located

Test all wires for continuity. 90.8 % of problems are caused by faulty wiring.

This is a GM CAR.... The Circuit Board on the Wiper Motor is BAD...

Replace the Circuit Board and your Problems will be gone

If you want to bypass it, I suggest you run a couple of wires from the battery, via a switch, directly to the washer motor. To verify what the dealer has told you, take it to another dealer or independent repair shop and get them to diagnose the problem.

I have a 22" Toro Recycler Lawn Mower with front wheel drive. After many years the original tires wore out, primarily the left front.
After I replaced the wheels the front wheels kept falling off. I learned that Toro uses an unusual two layer washer on the front wheels. You need a) either an exact replacement for this washer OR b) two separate washers. The hole of the washer is 3/8" Everbilt has the smaller flat washer PN 637-009 and the larger washer can be found in the Everbilt PN 281-293. The SMALLER washer must be placed closer to the frame, the larger washer is closer to the wheel. Once this was done it ran perfectly.
Later I found pieces of the original washers in the grass. Toro had the replacement washer available on their website, I was just in a hurry to get the mower back up and running. The Everbilt washers were purchased at Home Depot.

The rain sensor only connects to Intermatic sprinkler timer IF the timer has the rain sensor terminals.
Not all Intermatic sprinkler timers have that connection.
For example R8815P101C and R8816P101C have rain sensor terminals

I think the rain sensor terminals are located to the right of main wiring terminal block.
There are two screw terminals.

The rain sensor plugs into a power source, and then sensor wires connect to the timer.
Apply no voltage to the sprinkler timer terminals.

http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

How does one connect the Wired Toro Rain Sensor, Model 53769 to the Orbit, Model #57979?

You should be able to look up the mower and parts at the Toro website.

It won't operate under mamuel