The video below shows you how to switch the Summit X3 to jogging mode by locking the front wheel:
- Pull the front wheel lock lever down
- Slide the lever to the right to lock the wheel forward for running and jogging
- Rotate the front wheel until it clicks in the lock forward position
The front wheel of the Summit X3 should always be in the locked forward position when running or jogging, and do not engage or disengage the jogging swivel/lock while the stroller is in motion.
That is how you switch the Summit X3 to running and jogging mode by locking the front wheel.