Servicing The Cooling System; Checking The Radiator Coolant; Cleaning The Cooling System - Toro 74161 Service Manual

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Servicing the Cooling System

Checking the Radiator Coolant

Danger
Discharge of hot pressurized coolant or touching
hot radiator and surrounding parts can cause
severe burns.
• Do not remove the radiator cap when the
engine is hot. Always allow the engine to cool
at least 15 minutes or until the radiator cap is
cool enough to touch without burning your
hand before removing the radiator cap.
• Do not touch radiator and surrounding parts
that are hot.
Check the cooling system level daily.
Fluid Type: 50/50 mix of permanent antifreeze
(ethylene glycol) and water.
Cooling System Capacity: 128 oz. (3.8 l).
Danger
Rotating shaft and fan can cause personal injury.
• Do not operate the machine without the covers
in place.
• Keep fingers, hands and clothing clear of
rotating fan and drive shaft.
• Shut off the engine and remove the ignition
key before performing maintenance.
Caution
Swallowing engine coolant can cause poisoning.
• Do not swallow engine coolant.
• Keep out of reach from children and pets.
1.
Position the machine on a level surface, stop the
engine, and set the parking brake.
2.
Tilt the seat up and tilt the engine hood forward.
Mid-Mount Z Service Manual
3.
With the engine cool, remove the radiator cap
(Figure 8).
4.
If the coolant level is low, add a 50/50 mixture of
permanent antifreeze and water until the radiator
is completely full without overflowing.
5.
Install the radiator cap. Completely seat the cap
by pushing down and turning it until it stops.
6.
Add a 50/50 coolant mix to the overflow bottle and
fill it to the indicator line on the bottle, if required
(Figure 8).
Figure 8
(1) Radiator Cap
(2) Antifreeze Overflow
Bottle

Cleaning the Cooling System

Clean the cooling system daily before each use.
1.
Position the machine on a level surface, stop the
engine, and set the parking brake.
Before starting the engine, clean grass
Important
from the pump drive belt compartment. Check more
often in dry conditions.
2.
Tilt the seat up and raise the rubber flap above the
drive belt compartment.
3.
Remove debris from the drive belt compartment
and hydraulic pumps.
MAINTENANCE
m-5031-1
(3) Radiator Core and
Screen
2 - 7

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