Scott Stanley, 31, admitted to luring, then molesting and physically abusing the teens starting in the summer of 2012.
He was kicked out of the Scouts a few months before his arrest in July 2013, after being repeatedly warned about inappropriate conduct.
The sentence handed down Wednesday will see him spend three years and 281 days in prison, due to credit for time served.
The judge cited a doctor's report saying Stanley did not suffer from pedophilia, and was considered a low to moderate risk to re-offend.
But the sexual acts being performed with victims too young to legally provide consent was cited as an aggravating factor.
Stanley's defence had sought a sentence of three years less time served, while the Crown wanted six to eight years in prison.
(CFRA, 1310News, The Canadian Press)
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