Changing The Engine Coolant - Toro Z Master Professional 7500-D Series Operator's Manual

If the radiator is clean, proceed to step 8.
7. Cover the engine with a piece of cardboard or
a plastic sheet. Squirt water through the fins.
Blow through with low-pressure air from both
directions.
Note:
If debris remains, repeat until clean.
8. Lower the hood.
9. Start the engine to ensure that the fan functions
properly.
Changing the Engine
Coolant
Service Interval: Every 2,000 hours/Every 2 years
(whichever comes first)
1. Park the machine on a level surface, disengage
the blade-control switch, and engage the parking
brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Rotate the hood forward.
4. Drain the coolant when the engine is cool.
5. Remove the radiator cap, place a pan under
the radiator, and remove the drain plug at the
bottom of the radiator.
6. Remove the coolant hose from the oil cooler and
drain the coolant from the engine block
59).
1. Coolant hose
7. Install the drain plugs and hoses.
8. Fill radiator with a 50/50 mix of water and
ethylene glycol.
Note:
The use of Havoline
coolant is recommended.
Figure 59
Xtended Life
®
Allow some room (approximately 12.7 mm (1/2
inch)) for expansion. Add 50/50 coolant mix to
the overflow bottle on the left side of the engine
as required to bring the level up to the indicator
line on the bottle.
9. Operate engine until the engine thermostat
opens and the coolant is circulating through the
radiator core.
As air purges from the engine block and the
coolant level drops, add additional coolant to the
radiator.
10. When the radiator is completely full and no
additional coolant can be added, continue
running and install the radiator cap.
Ensure that the cap is completely seated by
pressing down firmly while turning, until the cap
stops. Once the cap is installed, shut off the
engine.
(Figure
g233651
58