Toro 640 - Manuals

4. With the valve depressed, grasp snap ring "ears" with TORO snap ring pliers (Model No. 995-07), release snap ring from groove and remove from body. 5. Remove valve mechanism with TORO Valve Removal Tool (Model No. 995-08) or carefully grasp one valve rib with snap ring pliers, pulling val...

Changing Upper Nozzle Note: Some of the nozzle assembly componentsshown in the following procedure are no longeravailable from Toro as service parts. This procedureshould only be used if the upper nozzle assembly isalready on hand. 1. Remove cap set screw with 1/8 in. hex wrench and unscrew cap. 2. ...

Reinstalling Nozzle/Drive Assembly 1. Part Circle Only: Holding drive assembly stationary, slowly rotate nozzle assembly counterclockwise to left side of arc pattern (see Figure 6). 2. Check drive assembly key tab for approximately 30° upward bend, adjust if necessary (see Figure 7). 3. Insert nozzl...