A celebration of Mark's life will be held at the Pine Senior Center in Pine, at noon on Thursday, April 13. Those attending are asked to bring a cover dish for a potluck, along with photos and their memories.
He owned and operated Pine Motor Sports in Pine for the last several years.
"Mark loved to snowmobile," his family said. "He loved to race them, go riding with friends and working on them.
"Mark was well known and well liked, both as a friend and a mechanic. He will be deeply missed by his family, friends and his community."
Mark is survived by: his father, Aron Claassen of Montana; his mother, Patricia Frechette of Wisconsin; a sister, Lynne Richard, and a brother, Bill Claassen, both of Montana, and a brother, Ben Claassen, of Wisconsin.