Toro ProLine H800 Service Manual page 92

Lowering the Height Of Cut
g292156
Hydraulic System: Hydraulic Flow Diagrams
When the height of cut switch is moved to the LOW position, the solenoid valve
inside the control valve is energized to cause the valve to shift, allowing fluid flow
from the P port to the B port. This retracts the piston, causing the height of cut
to lower. The fluid displaced from the barrel end of the height of cut cylinder
is routed to the T port. The block valve (located between the height of cut
control valve and cylinder) holds the fluid pressure in the height of cut cylinder to
maintain correct level of cut until the next adjustment.
Figure 36
Page 5–24 ProLine H800
19241SL Rev A