Throttle Valve Body; Adjusting The Idle Speed; Executing The Initialization Run - Husqvarna FC 250 2015 Repair Manual

23

THROTTLE VALVE BODY

m
23.1 Ad"ustin the idle s eed
Danger
Danger of poisoning
-
Always make sure there is sufficient ventilation when running the engine.
-
Use an effective exhaust extraction system when starting or running the engine in an enclosed space.
A
Warning
Danger of accidents
-
Set the idle speed to the specified value.
23.2

Executing the initialization run

Exhaust gases are toxic and inhaling them may result in unconsciousness and death.
The engine may go out spontaneously if the idle speed is set too low.
-
Run the engine until warm.
-
Adjust the idle speed by turning the idle speed adjusting screw
I Guideline
Idle speed
I
Tachometer (45129075000)
• Info
I
Turning counterclockwise lowers the idle speed.
Turning clockwise raises the idle speed.
Condition
The diagnostics tool is connected and running.
-
Execute "Engine electronics"> "Functions"> "Delete adaptation values".
✓ The adaptation values are deleted.
-
Select "Engine electronics" > "Measured values" > "Coolant temperature
sensor (TW1)".
m
✓ The coolant temperature is displayed during the initialization run.
Danger
Danger of poisoning
result in unconsciousness and death.
-
-
-
Start the engine without operating the throttle grip.
I Guideline
Coolant temperature
-
Let the engine idle until it reaches the specified temperature.
I Guideline
Coolant temperature
• Info
I
Do not operate the throttle grip during the initialization process.
(ilill p. 224)
Exhaust gases are toxic and inhaling them may
Always make sure there is sufficient ventilation when running the
engine.
Use an effective exhaust extraction system when starting or running
the engine in an enclosed space.
0-
I
2,250 ... 2,350 rpm
I
< 25 °C (< 77 °F)
1
ao ... 90 °c (176 ... 194 °F)
196