Collin Adams paced Muskegon with two goals and an assist while Derek Daschke and Casey Gilling each had a goal and an assist.
The RoughRiders opened the scoring with a power play goal by Matt Hudie at the 10:56 mark of the first period.
Muskegon tied the game 1-1 early in the second period on a goal from Adams. Andrei Svechnikov and Casey Gilling picked up assists on the tally.
Adams scored his second goal at the 12:13 mark of the second period to give the Lumberjacks a 2-1 advantage. Scooter Brickey and Daschke assisted on the goal.
The Lumberjacks increased their lead to 4-1 with two more second-period goals, from Daschke and Gilling, just 1:45 apart.
Adams, Login Drevitch, Koby Bender and Travis Mitchell each had assists on the second-period goals.
The RoughRiders cut their deficit to 4-2 on a goal from A.J. Villella at the 15:43 mark of the third period.
Muskegon added an empty net goal from Zach Berzolla with 1:23 left in regulation.
Lumberjacks’ goaltender Keith Petruzzelli stopped 25 of 27 shots. Muskegon outshot the RoughRiders by a 36-27 margin.