MC Marine Service Center

20-Hour Check

A 20-hour check is the standard break-in inspection for a new outboard, I/O, or sterndrive engine, done after the first hours of run time and before your boat settles into regular use.

Schedule Your Check

Engine Break-In

Why The First 20 Hours Matter

New engine components need time to seat properly, and the first hours of run time put more stress and vibration on fasteners, fittings, and moving parts than any hour after. A 20-hour check gives our technicians a chance to catch anything that shifted, loosened, or needs attention early, so your new engine is set up for a long, reliable life on the water.

  • Check and top off fluid levels
  • Verify belt tension
  • Check fasteners and fittings for movement from break-in vibration
  • Inspect the cooling system for proper water flow
  • Check steering and controls for smooth operation
  • General visual inspection for anything unusual after the first hours of run time

See The Work

Checking The Instruments

Instrument gauge panel checked during a break-in inspection at MC Marine

Questions

20-Hour Check FAQ

Plan to bring your boat in once it reaches approximately 20 hours of run time on a new engine. Call MC Marine at (417) 995-2017 or fill out the form below to get on the schedule.

Yes, the specifics vary slightly depending on whether your engine is an outboard, I/O, or sterndrive, so call ahead so our shop knows what to expect and can plan for it accordingly.

Fill out the form below or call us at (417) 995-2017 to get your 20-hour check scheduled.

Get Started

Schedule Your 20-Hour Check

Fill out the form below and our service team will follow up to get your new engine's break-in check on the schedule.