It left the youngster with a swelling on the brain and required more than two weeks in hospital.
It was a moment in time Mr Hartley said changed how he viewed each and every day.
‘It’s amazing how easy it is in life to take everything you have for granted and want more, but it’s not until you have an experience like one of your children getting hurt that you stop and think about the priorities in your life,’ he said.
Mr Hartley’s son has since recovered, but the incident still acts as motivation for the 30-year-old who will take part in this year’s Ronald McDonald House charity ride from Busselton to Perth.
The 400km ride runs from October 9 to 12, with a $1 million target set to help build a new charity house in Perth.
‘Going to hospital is a very scary prospect for a lot of children, (but) creating a home away from home makes that prospect a little easier for the challenges the children and their families may face while undergoing important treatment,’ he said.
Visit warideforsickkids2013.everydayhero.com/au/stuart to donate.