Toro 74216 Operator's Manual page 34

7. Inspect seals on engine cover and replace if needed.
8. Close engine cover and tilt seat back.
Changing Engine Coolant
Change engine coolant every 4000 hours or 4 years, which
ever occurs first.
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.
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.
1. Position machine on a level surface, stop the engine
and set the parking brake.
2. Tilt seat up and tilt engine hood forward.
3. With engine cool, drain coolant by loosening the drain
cock in the right rear corner (Fig. 41)
4. The engine block may be drained by removing the
radiator hose and/or drain plugs from the engine block
(Fig. 42).
Note: The drain plugs may be accessed from the back of
the machine and are located in both cylinders. They are
hex heads and black in color (Fig. 42).
5. Re–install all drain plugs, radiator hose and tighten
drain cock.
1
Figure 41
1. Drain cock (right rear of
radiator)
1
Figure 42
1. Drain plug (from engine
block)
6. Drain coolant from overflow bottle.
7. Remove the radiator cap and add 50/50 mixture of
DEX–COOL antifreeze and water until completely
full.
8. Wait 2 minutes and check if coolant stays up to full
level. Add 50/50 mixture of DEX–COOL antifreeze
and water until completely full, if required. Repeat
until the coolant stays up to the full level.
9. With the radiator cap off, tilt the engine cover down
and put the seat down. Start the engine. Run engine
until it is warm.
10. Tilt seat up, tilt engine hood forward and keep engine
running. As air is purged from the engine block and
the coolant level drops, add additional coolant to the
radiator until full.
11. Reinstall radiator cap. Completely seat cap by pushing
down and turning until it stops.
12. Shut off engine.
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