User manual Toro 640

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Changing Upper Nozzle  
FIGURE 3  
Note: Some of the nozzle assembly components  
shown in the following procedure are no longer  
available from Toro as service parts. This procedure  
should only be used if the upper nozzle assembly is  
already on hand.  
1
2
3
. Remove cap set screw with 1/8 in. hex wrench and  
unscrew cap.  
. Remove nozzle container seal, nozzle retainer and  
nozzle/drive assembly from body.  
. Straighten locking tabs on nozzle container with  
nozzle container removal tool, Model No. 995-42 or  
other appropriate tool (see Figure 3).  
Container  
Removal Tool  
995-42  
4. Remove nozzle container, nozzle screws and upper  
nozzle assembly (see Figure 4).  
5
. Position new upper nozzle assembly and secure with  
nozzle screws. DO NOT OVER-TIGHTEN  
SCREWS. (See Figure 4 and Note below.)  
Note: Over-tightening nozzle screws will expand  
plastic nozzle base causing difficult nozzle container  
replacement.  
6
. Align nozzle opening in container with nozzle orifices and press container downward until fully seated on nozzle assembly.  
. Bend locking tabs into notches approximately 90° to secure nozzle container.  
7
Changing Stator  
1
2
3
. Place nozzle/drive assembly on a flat  
work surface, nozzle down, and  
compress return spring to expose  
stator assembly (see Figure 5).  
FIGURE 4  
FIGURE 5  
Stator  
Assembly  
. Separate stator from drive assembly  
(
held together by press fit) and  
CAREFULLY relieve return spring  
tension.  
. Press in new stator assembly to fully  
seated position.  
Upper  
Nozzle  
Assembly  
Lower  
Nozzle  
Assembly  
3

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