Our service departments are dedicated to quality work and customer satisfaction. Our mechanics are trained in all up-to-date information from Mercury, Mercruiser, Cummins, and Volvo Penta. We pride ourselves on having mechanics with over 20 years experience working in the marine engine field. If there is work that our mechanics or technicians can not do we have local vendors that we trust to employ to do the work from canvas and upholstery to your yacht care services.

GLYS - Kenosha
443 50th St
Kenosha, WI

Service Description

We are a dealer for multiple manufacturers and we stock the most common parts. If you are needing a tune up, please request for annual maintenance.

According to Mercury, the following maintenance needs to be performed at the appropriate hours.


  • Change engine oil and filter.

Every 100 HOURS or ANNUALLY (whichever comes first)

  • Touch-up the paint on the power package.
  • Change the engine oil and filter.
  • Change the sterndrive gear lube.
  • Check the coolant level and antifreeze concentration for adequate freeze protection. Correct if necessary. Refer to the specifications section.
  • Tighten the connection of the gimbal ring to the steering shaft to specifications.
  • Replace the water-separating fuel filter.
  • Check the steering system and the remote control for loose, missing, or damaged parts. Lubricate the cables and the linkages.
  • Check the continuity circuit for loose or damaged connections. Test the MerCathode unit output if equipped.
  • Recommended Maintenance and replacement of the (PVC) valve.
  • Clean the flame arrestor, IAC muffler, and the crankcase ventilation hoses.
  • Inspect the condition and the tension of the belts.
  • Driveshaft extension models: Lubricate the driveshaft U-joints, and tailstock input and output bearings.

Every 300 HOURS or 3 YEARS

  • Check the engine mount nuts for tightness and torque if necessary.
  • Replace spark plugs.
  • Inspect the spark plug wires and replace as necessary.
  • Check the electrical system for loose, damaged, or corroded fasteners.
  • Check the cooling system and the exhaust system hose clamps for tightness. Inspect both systems for damage or leaks.
  • Disassemble and inspect the seawater pump and replace worn components.
  • Clean the seawater section of the closed cooling system. Clean, inspect, and test the pressure cap.
  • Inspect the exhaust system components. If the package was equipped with water shutters (flapper valves), verify that they are not missing or worn.
  • Check the engine alignment.
  • Inspect the U-joints, the splines, the bellows, and check the clamps.
  • Lubricate the U-joint splines and cross bearings, if equipped with grease fittings.
  • Inspect the gimbal bearing for roughness. Replace if necessary. See your certified Mercury MerCruiser dealer.
  • Lubricate the engine coupler.
  • Replace the vent valve and duckbill valve on each exhaust elbow (port and starboard).

Every 5 YEARS

  • Replace the coolant/antifreeze. Replace every two years if not using extended-life coolant/antifreeze.