Cleaning The Cooling System - Toro 25500 Operator's Manual

Checking the Condition of Cooling
System Components
Service Interval: Every 300 hours
Check the condition of the cooling system for leaks, damage,
dirt, and loose hoses, and clamps. Clean, repair, tighten, and
replace the components as necessary.
Checking the Concentration of the
Coolant
Service Interval: Every 1,000 hours
Test the concentration of ethylene glycol based antifreeze in
the coolant . Ensure that the coolant is a mixture of 50%
ethylene glycol and 50% water.

Cleaning the Cooling System

Service Interval: Every 2,000 hours/Every 2 years
(whichever comes first)
The coolant capacity of the engine and the radiator: 18.5
L (19.5 US qt).
Draining the Coolant from the System
Important: Do not pour coolant onto the ground or into
an unapproved container that can leak.
1. Remove the left and right side panels; refer to
Removing the Side Panels (page
2. Remove the 2 hex-head bolts that secure the reservoir
door to the hood and open the door
3. Remove the recovery-tank cap from the tank
97).
4. Slip a coolant resistant hose that is 3/8 x 30 inches over
the outlet for the drain valve in the radiator
44).
(Figure 97).
(Figure
(Figure 98).
64
Figure 98
1. Drain valve
2. Hose clamp
5. Secure the hose to the drain valve with a hose clamp
(Figure 98).
6. Route the hose down and through the hole in the lower
mounting plate for the back fill blade
Figure 99
1. Front of the machine
2. Up
3. Hole (lower mounting
plate)
7. Place a drain pan with a minimum capacity of 23 L (6
gallons) under the open end of the drain hose
99).
8. Open the drain valve on the radiator, and allow the
coolant to drain completely.
3. Drain hose (coolant
resistant)
(Figure 99).
4. Drain hose (coolant
resistant)
5. Drain pan—minimum
capacity of 23 L (6 gallons)
(Figure