Powerhead Exchange Inc.

Break-in procedure for oil injected engines remanufactured by Powerhead Exchange Inc.

Entire 10 hours

 Fuel/oil ratio during entire break in procedure shall be  50:1 fuel/oil ratio inside the fuel tank. That's 2.5 ounces of oil for every gallon of gas. 1 Quart per 12 gallons. 1 gallon per 50 gallons. This is in addition to your properly functioning oil injection system. The oil ratio will ultimately end up being 25:1 using both tank oil and oil injection system.

It is recommended that the oil injection system usage be closely monitored during the break in procedure. This will verify that the system is inducing oil as it should. This should be performed before the additional oil is no longer added to the fuel tank. Some people draw a line on the oil injection reservoir. You may also measure and keep track of oil usage per gallon of gas.

Do not hold constant throttle setting when running engine above idle. Vary the engine RPM frequently.

Hours 1 Thru 5 Use throttle to accelerate boat onto plane, then reduce throttle to below 3500 RPM. Be sure that boat remains on plane at this setting.  If not, accelerate to maintain minimum plane. Do not plow through water. (change engine speed frequently 30-60 seconds).

Hours 6 Thru 9 Use throttle to accelerate boat onto plane, then reduce throttle to below 4500 RPM.  Be sure that boat remains on plane at this setting.  Do not plow through water. (change engine speed frequently 60 seconds).

Hours 10 Thru 12 Use throttle to accelerate boat onto plane, then reduce throttle to below 4800 RPM. Change engine speed every 1-2 minutes.

After 12 hours of break in, the object is to gradually and alternately work the RPM's up from a lower RPM to a higher RPM. This should be done in 100 RPM increments. Returning to a lower RPM each time. (Work up to 4800, then back to lower, 5000 then back to lower, etc. Do this until the maximum dealer recommended RPM is attained for your engine. Do not exceed the maximum dealer recommended RPM.

The cylinder heads must be re-torqued after break-in procedure is complete and while the ENGINE IS COOL.

Very Important rules to follow for the entire remaining life of your engine

If there is a drop in RPM while at a constant throttle setting, Idle or get pulled back in and diagnose the problem.

 If the cause is fuel starvation, it WILL cause major internal engine damage if a high RPM is maintained.

Varying the RPM is a good rule to follow for the longevity of your engine for years to come. It doesn't hurt the engine to get onto plane then off.  The objective is to give the engine a variance of wear positions within. (move around the hot spots).

Caution!!!

This break in procedure is only recommended for Powerheads remanufactured by Powerhead Exchange Inc.