First 50 Hours Of Operation

The first 50 hours of operation are the most important to your boat. Proper break-in will ensure maximum performance and the longest possible power-train life. The break-in period allows moving parts within the engine and transmission to wear-in properly. All MasterCraft boats are lake-tested on the water before leaving the factory, but the break-in must continue for the first 50 hours of your ownership.

NOTE: Failure to follow the break-in procedure exactly as stated will void the engine warranty!

NOTE: Before operating the boat for the first time you must read the manual completely!

To ensure proper break-in and lubrication, boat owners should not remove the factory break-in oil until after the initial ten (10) hours of operation. At that time, an oil change should be performed by an authorized MasterCraft service technician at your local MasterCraft dealer.

Please follow the break-in procedure carefully. Close attention to the following is very important:

Maintain the proper oil level: Until the piston rings, cylinder and other working internal parts are thoroughly seated, oil consumption can be high and must be carefully watched. Refer to your engine owner's manual for specific oil requirements. 

Pay close attention to the gauges: It is important to stop the engine immediately if the gauges indicate a problem. Low oil pressure and overheating are serious issues and require immediate attention.

Abnormal vibration or noises: These symptoms can precede trouble and should not be ignored. Occasionally, hardware may work loose, mountings may need tightening or the driveline may require attention.

Fuel, oil or water leaks: Leaks can pose a serious safety threat. If one occurs, it is most likely to do so after a few hours of operation.

Vary the engine speed: Never run the engine for more than three (3) minutes at any constant RPM during the break-in period. Doing this will assist in the proper break-in of rings and bearings.

Plane the boat quickly: Operating the boat at low speeds places an excessive load on the engine. Plane quickly, then back down to a slower speed.


First Hour of Operation:

Start the engine and allow the warm-up to normal operating temperature (140 degrees F to 190 degrees F) at low idle (600 to 800 RPM). Operate the boat in forward gear, accelerate quickly, but gradually, to planing speed. Then return the throttle back to maintain a planing attitude. Vary the engine speed, but do not exceed 2000 RPM for the first hour. Carry only a light load.

First Five Hours of Operation:

Continue operation at plane and vary the engine speed, but do not exceed 4000 RPM. Occasionally reduce the throttle to idle speed for a cool-down period. Carry only a light load.


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