Re: Throttle ?
Step 1: Push the button.
Step 2: Move (or pump) the throttle lever as desired and release the button.
Step 3: Leave the lever about 1/3 forward. (fast idle position)
Step 4: Start the engine.
Step 5: When engine is warmed up, return the lever to neutral. The button will pop back out and gearshift will now be re-engaged.
Step 6: Go forward or backward as desired.
Can't make it any clearer than that.