Here is what I copied off Chris Carson Marine's site. This is what I used for my break in.
BREAK IN SCHEDULE
Hrs. 1-2: Trolling speed-under 2,000 rpm. Vary speed.
Hrs. 3-4: Under 4,000 rpm. Vary the speed (bring on a plane for a few minutes and off a plane.)
Hrs. 5-6: 4,500 rpm. Vary the speed.
Hrs. 7-8: Under 5,000 rpm. Vary the speed.
The first 8 hrs: Mix the oil 40:1, for a 50:1 Fuel/oil mix motor.
After the 8hrs: Go to a 50:1 mix. If this is an oil injected motor mix fuel at 100:1 during the first 8hrs. of running time. Then, verify that the oil injection is working by making sure a normal amount of oil has been used from the oil tank, before using oil injection alone. Use TCW-3 grade oil and good (FRESH) Gasoline-(Less than 2 months old.)
Thereafter: Use at any speed but avoid continuous wide open speeds until 20 hrs.
Important: Please note that we bore and hone engine blocks ourselves, and hand fit for exacting tolerances. Our rebuilt powerheads are not built ‘loose’, like mass produced factory units. Therefore, it is very important to follow our break in schedule. Disregarding the break in instructions will likely result in piston seizure, resulting in mild to major damage! Engine damage or failure caused by running the motor too fast too soon will not be covered by warranty, and this type of damage is easily detectable by compression testing or visual inspection.
Thank you for your trust in our work. Your efforts given to regular maintenance, using good oil, fresh fuel, and regular use, in addition to proper break in should result in years of dependable engine service. This is pleasure boating!
Remember: The only dumb question is the one you don’t ask. Please keep in touch; most problems are best handled fresh. This is imperative if the motor has water intrusion, from a complete or partial submersion, blown gasket or water in fuel. If the motor does not run correctly, always check the spark plugs for signs of water. If water is suspected, call immediately. If in doubt, call!
Maintenance tips:
Every six months or fifty hours: Change lower unit oil, grease all zerks, carbon treatment, check zincs, inspect steering and controls, batteries and connections, fuel filter, lines, prime bulb, propeller, and boats general condition.
Every year or one hundred hours: Also change water pump, clean carburetors or main jets, change spark plugs, change fuel filter, inspect all systems ,hull, transom, trailer, etc.
