Servicing Pilot Valve

WARNING

NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED, DURING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE PROCEDURES. DIRECT CONTACT WITH IRRIGATION SPRAY, A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIOUS INJURY.

Note: Refer to Figure 7 for the following procedure.

1.Make sure that the water supply to sprinkler is positively shut off and any residual pressure has been bled off. If the sprinkler is pressurized, main valve will open when the pilot valve is disconnected from control tube.

2.Carefully remove turf and soil from side of sprinkler to expose pilot valve and control tubing.

3.Remove two retaining screws from the pilot valve housing (1).

4.Pull the pilot valve assembly away from the sprinkler body and cut the control tubing just below tube retainer. Unless pilot valve has been previously removed, control tubing length will be sufficient for re-connection.

5.Remove tube retainer and remaining piece of control tubing from valve body fitting.

8.Pull pilot valve body assembly out of housing.

6.Remove solenoid (2) by turning it counterclockwise.

7.Remove selector shaft assembly (8) and plunger assembly (3). (The selector shaft retains the plunger in the valve body.)

9.Remove diaphragm assembly (10), piston (9), spring (8) and o-ring (4).

Figure 7

 

 

6

 

10

 

7

 

5

 

9

 

8

 

4

2

 

3

1

 

10.Thoroughly clean and inspect all parts. Replace damaged parts as necessary and reassemble in reverse order. Note: Refer to Illustrated Parts Breakout Book, form number 368-0044 for part numbers.

Flushing Sprinkler _______________________________________________________

WARNING

NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED, DURING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE PROCEDURES. DIRECT CONTACT WITH IRRIGATION SPRAY, A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIOUS INJURY.

1.With sprinkler operating, carefully step down on center of cap several times. Water will flow around riser and flush out debris.

2.Cycle sprinkler on and off several times to check for proper retraction. Cap should be even with top of body flange when fully retracted. If riser sticks in up position, check for debris lodged between riser and body. Flush out all debris. Remove sprinkler mechanism if necessary.

© 2002 The Toro Company, Irrigation Division

Form Number 373-0243 Rev. A

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Toro 850S, 830S specifications Flushing Sprinkler, Servicing Pilot Valve
Page 7

830S, 850S specifications

The Toro 850S and 830S are cutting-edge ride-on mowers designed for commercial landscaping professionals who demand durability, efficiency, and optimal performance. Both models boast an array of advanced features and technologies that provide unparalleled mowing capabilities while ensuring ease of operation and maintenance.

The Toro 850S is known for its robust engine performance, powered by a high-torque, gasoline engine designed to deliver outstanding cutting power. Its 60-inch or 72-inch cutting deck options allow for a broad mowing path, enhancing productivity by covering large areas quickly. Enhanced with Toro’s patented Smart Speed Technology, the operator can easily adjust the speed without compromising cutting performance, allowing for precise control when navigating tight spaces or around obstacles.

Similarly, the Toro 830S offers impressive performance with its own high-powered engine while providing a slightly more compact design. The 830S features a 52-inch cutting deck, which is excellent for smaller properties or areas with constrained access. Its agility and responsiveness make it a favorite among landscapers who need to manage intricate landscapes without sacrificing speed or cutting quality.

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Maintenance is simplified through a modular design that allows for easy access to vital components. This means that regular upkeep can be done quickly, ensuring that both the 850S and 830S remain in peak operating condition with minimal downtime.

In summary, the Toro 850S and 830S mowers are exceptional choices for professionals needing reliable, powerful, and efficient tools for their landscaping needs. Their combination of innovative technologies, operator-friendly features, and robust construction ensures that they stand out in the competitive market of commercial ride-on mowers.
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