Service - 31
Cleaning Radiator and Screen
1. Park the power unit on a level surface.
2. Shut off engine and engage park brake.
3. Remove ignition key from switch.
4. Open engine hood to access radiator screen.
Remove radiator screen.
5. Remove debris from screen with a brush, com-
pressed air, or water.
6. Remove dirt and debris from radiator using com-
pressed air or water. Spray from the fan side of
radiator only.
7. Check
radiator
fi ns for damage.
8. Reinstall radiator screen.
9. Close engine hood.
Avoid Personal Injury!
Wear Personal Protective Gear to protect
eyes and hand when opening radiator cap to
protect against the pressure in the radiator.
Draining Cooling System
1. Park the power unit on a level surface.
2. Shut off engine and engage park brake.
3. Remove ignition key from switch.
4. Allow engine to cool.
5. Open engine hood to access radiator.
6. Slowly open radiator cap to the fi rst notch to al-
low pressure to release.
7.
ATTENTION:
Avoid engine damage!
• Do
not
fl ush the cooling system when the
engine is hot.
•
Do not operate engine without coolant.
Open the radiator drain, located at the bottom
rear corner of the radiator (not pictured). Drain
coolant into a pan.
8. Close radiator drain after all coolant has drained
from the radiator.
9. Flush cooling system.
Flushing Cooling System
1. Park the power unit on a level surface.
2. Shut off engine and engage park brake.
3. Remove ignition key from switch.
4. Drain system. Add one can of radiator fl ush,
(can be purchased at any auto parts store) fi ll
with clean water and follow the instructions on
the can.
5. Install radiator cap.
6. Start engine and run until it reaches operating
temperature (160 - 180 degrees).
7. Shut off the engine.
8. Remove the ignition key from switch.
9. Open radiator drain valve and drain cooling sys-
tem immediately before the rust and dirt settle.
10. Allow engine to cool.
11. Fill radiator with clean water and allow to fl ush
out until the water comes out clear.
12. When water has drained from radiator, close
drain valve and fi ll with proper coolant. See the
engine operator’s manual for the correct type
of coolant.
Avoid Personal Injury!
If the unit has been running, the radiator will
be hot and can burn skin! Built up pressure in
the radiator can cause an explosive release of
coolant when the radiator cap is removed.
ATTENTION:
Avoid Radiator Damage! Us-
ing incorrect coolant mixture can cause dam-
age to your radiator.
•
Do not use straight antifreeze or more than
50% antifreeze in cooling system.
•
Do not mix or add any type of additive to
the cooling system.
NOTE: certain geographical area may require
lower temperature protection. Read the label
on your antifreeze container or consult your
local Ventrac dealer to obtain the correct infor-
mation for your area.
SERVICE