Toro 730 - Manuals

System Troubleshooting — Sprinklers (continued) PROBLEM POSSIBLE CAUSE – CORRECTIVE ACTION 5. Valve won't open (a) Plugged controller discharge line or discharge port in pilot valve. (Hyd. Normally Open – Verify by checking for discharge at discharge line when station is activated. If no discharge, ...

Servicing Procedures Introduction The 734 sprinkler is designed to provide the user trouble-free operation for many years without scheduled maintenance.Should it become necessary to disassemble the sprinkler to correct a malfunction or replace a component, all internal parts ofthe sprinkler are acce...

Valve Removal and Replacement 1. To remove valve assembly, squeeze ears of snap ring together with snap ring pliers (P/N 995-07) and remove snap ring from sprinkler body. (See Figure 3.) CAUTION If snap ring is difficult to remove, there may be residual water pressure in the system. Recheck the wate...

Flushing Sprinkler Heads 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 fullyretracted. If ...