Cub Cadet M467 - Manual (Page 13)

Maintenance & Adjustments
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13
Engine
Read the Kohler engine operator’s manual for any service or
maintenance information pertaining to the engine.
Engine Coolant
Checking Engine Coolant Level
Before each use, the engine coolant level in the overflow
reservoir should be checked to ensure it is within the operating
range. Engine coolant absorbs heat from the engine and
transfers the heat to the air flowing through the radiator. If the
coolant level becomes low, the engine may overheat and could
cause severe damage to the engine.
Use a permanent type antifreeze containing corrosion and rust
inhibitors. Dilute the antifreeze with water at a 1 : 1 ratio to mix
the coolant solution (50% antifreeze : 50% water).
NOTE: Distilled water is recommended for the coolant solution
IF your tap water has a high mineral content. Minerals cause
scaling in the engine and the radiator coolant passages. System
efficiency will be greatly reduced over time and severe engine
damage may result. Refer to the antifreeze manufacturer’s
instructions for additional information on dilution procedures.
Check the coolant level when the engine is cold and the
utility vehicle is on a level surface.
Raise the hood and check the coolant level in the overflow
reservoir on the right side of the engine.
If the coolant level is below the “LOW” mark, remove the
cap from the reservoir and add coolant solution to the
“FULL” mark. Refer to Fig. 6-1. 1.
2.
3.
NOTE: The cooling system is a closed type. Normally, to prevent
air from entering the system, the radiator cap should not be
removed.
If the overflow reservoir is empty, the radiator cap should be
removed and the coolant level in the radiator checked before
adding coolant to the reservoir. If necessary, first refill the system
through the radiator filler neck as follows:
WARNING: It is dangerous to remove the radiator
cap when the system is hot. Allow the system to
cool before removing the radiator cap.
Turn the radiator cap counterclockwise to the first stop to
release any pressure.
Push downward on the cap and turn counter-clockwise
until the cap stops then lift cap off.
Slowly pour coolant into the filler neck until the level
reaches the bottom of the filler neck overflow flange.
Wait a few minutes to allow as much air as possible to
escape through the filler neck, then reinstall the radiator
cap.
Fill the overflow reservoir to the “FULL” mark.
Start the engine and allow it to run for a short period. Stop
the engine.
Recheck the coolant level in the overflow reservoir and
refill as needed. Reinstall the reservoir cap.
Changing the Engine Coolant
The engine coolant should be drained and replaced with new
coolant solution every 2 years or 500 hours.
Dilute the antifreeze with water at a 1 : 1 ratio to mix the coolant
solution (50% antifreeze : 50% water).
Change the engine coolant as follows:
Drain the coolant when the engine is cold.
Place the unit on a level surface and raise the hood.
Slide the overflow reservoir upward and off the reservoir
bracket to access the radiator drain plug.
Locate the radiator drain plug in the lower right rear corner
of the radiator.
Place a suitable container beneath the drain plug and
remove the cap from the overflow reservoir.
Turn the drain plug counterclockwise to re-move. Allow
as much of the old coolant as possible to drain from the
system.
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Figure 6-1