Water Pump - Toro 500 EFI Service Manual


NOTE: The fan wiring must be in the upper-right
position.
2. Install the radiator.

Water Pump


NOTE: The water pump is not a serviceable compo-
nent. If the pump is defective or if the mechanical
seal is leaking (coolant dripping from the discharge
hole), the water pump must be replaced.
REMOVING
1. Remove the radiator cap; then remove the water pump
coolant drain plug and drain the coolant.
2. Drain the oil from the engine/transmission.
3. Remove the seat and seat base.
4. Loosen the coolant hose clamps and slide the clamps
away from the hose ends.
5. Remove the two cap screws securing the water pump
to the engine; then remove the water pump.
124
INSTALLING
1. Secure the water pump to the engine with the two
cap screws tightened to 8 ft-lb.
PR122A
2. Connect the two coolant hoses to the water pump and
secure with the clamps; then install the water pump
coolant drain plug.
3. Fill the engine/transmission with the proper amount
of recommended oil.
4. Open the coolant bleed screw and fill the cooling
system with the proper amount of recommended
coolant. Close the bleed screw and tighten when no
more air is present.
PR132

NOTE: While the cooling system is being filled, air
pockets may develop; therefore, run the engine for
five minutes after the initial fill, shut the engine off,
and then fill the cooling system.
CC786A
CC786A
HDX158B