Engine Thermostat; Checking And Filling Coolant - Kohler 24RCL Manual

4.4 Engine Thermostat

See Figure 4-3 for the location of the engine thermostat.
The thermostat rating is shown in Figure 4-4. Refer to
the engine service manual for thermostat and water
pump service information.
1
1. Thermostat
Figure 4-3 Thermostat Location on the Engine
(24RCL engine shown)
Item
Thermostat Valve open at 76_C (169_F)
Valve lift fully open at 88_C (190_F)
Figure 4-4 Thermostat Setting
TP-6907 5/16
Setting

4.5 Checking and Filling Coolant

Maintain the coolant level in the coolant overflow bottle
between the High and Low markings. See Section 1,
Service Views, for the coolant overflow bottle location.
Note: Periodically check the coolant level by removing
the radiator's pressure cap. Do not rely solely on
the level in the coolant overflow bottle.
Add fresh coolant until the level is just below the
overflow tube opening. Use a coolant mixture of 50%
ethylene glycol and 50% clean, softened water to inhibit
rust/corrosion and prevent freezing.
A coolant solution of 50% ethylene glycol provides
freezing protection to --37C (--34F) and overheating
protection to 129C (265F). A coolant solution with less
than 50% ethylene glycol may not provide adequate
freezing and overheating protection. A coolant solution
with more than 50% ethylene glycol can cause engine or
component damage. Do not use alcohol or methanol
antifreeze or mix them with the specified coolant.
Section 4 Cooling System 57