About Mr Marine

Founded in 1988 by Melvin Riggs and Robert Lloyd.  Today Mr. Marine is owned jointly by Melvin Riggs and Mark Gewirtz, while Bob enjoys retirement.  Mr. Marine is proud to be a Mercury Premier dealership and Mercury/Mercruiser servicing agent.  With award winning service and a great selection of inventory, we specialize in keeping you on the water!

“I think the most-common cause of impeller failure I see is simply old age,” says Dan Jansen, the lead certified Mercury technician at Mr. Marine in Fond du Lac, Wis. “Even with our short season, I find a lot of impellers that are too worn at the tips to pump well, or are really stiff. We make changing the impeller part of our off-season lay-up program, because if it fails you can have much more expensive problems.”
Read more: http://features.boats.com/boat-content/2011/07/outboard-expert-water-pump-impellers/#ixzz1SbQigiry

Our Featured Brands




Award Winning Service

We are also the proud recipient of the Mercury Customer Satisfaction Index (CSI) Award in 1997, 2000, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014.

Our Expert Team



David Sonnenberg | Service Technician

 Dave rejoined the staff at Mr. Marine in 2015. He has 15 years of experience in the marine industry, having first worked at Mr. Marine while still in high school. Dave is certified in Mercruiser products and is pursuing service certification in Mercruiser and Mercury Outboards. He is also happy to provide mobile service to our customers. 


Mark Gewirtz | Owner & General Manager

Mark is an avid marine sports enthusiast and joined the Mr. Marine team as owner and general manager.  Mark’s background is in offshore racing, but has years of business management/ownership expertise.  We are proud to welcome Mark to the family!