Fuel System
38 32 690 03 Rev. IKohlerEngines.com
Adjustable Thermostat Reset
NOTE: Do not remove or loosen thermostat screws. Position is set at factory.
NOTE: Thermostat temperature must be at room temperature before testing.
If thermostat is loosened or removed, use following procedure to reset position.
1. Unplug thermostat wire.
2. Thermostat position should be set to low position of adjustment range (E).
3. Once thermostat position is set, engine must be started at idle with thermostat wire disconnected to test system
function.
4. If engine runs correctly, no further adjustment is needed.
5. If engine speed does not increase to idle speed on start up, thermostat position must be adjusted by rotating
housing clockwise in 1 mm increments and retested. Position should not exceed high adjustment range shown
(D).
6. Plug in thermostat wire.
Adjustable Thermostat
B
D
E
F
D
E
F
C
A
A
Spring Tab Must be
Located in Lever Slot
B
Models KT725,
KT735
C
Models KT740,
KT745
D
High Position of
Adjustment
Range
E
Low Position of
Adjustment
Range
F
This Edge of Metallic
Ground Strap Must
Fall Within
Adjustment Range
G Lever Slot
G
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