SUGGESTED PRECOUTIONS FOR REMANUFACTURED ENGINES
This engine has been carefully remanufactured to precision standards, and will
perform properly if certain steps are taken by the mechanic making the installation.
Following is a list of causes for a remanufactured engine to fail early in service, and
suggested procedures to prevent failure. When a properly remanufactured engine
fails to give satisfactory service, it is usually due to: burning piston heads caused by
detonation, pre-ignition or "lugging"; piston scuffing or seizing usually caused by
overheating or excess fuel; bearing and crankshaft wear caused by under-
lubrication, dirt or coolant seepage; excessive piston and cylinder wear caused by
dirt, ineffective air filtering, coolant seepage or excessively rich, air-fuel ratio.
The customer and the remanufacturer have a mutual interest in this engine.
We both want it to perform and give long and satisfactory life.
We recommend these precautions:
1. Be sure to prime the oil pump, oil lines and fill the oil filters with oil using an
auxiliary pump, operating the internal oil pump with a hand drill, or an external
pressure tank connected to the oil pressure gauge or sending unit fitting before
starting the engine. It is desirable to fill the crankcase in this manner. If using an air
pressure tank be sure it does not run out of oil and blow air through the lines.
2. Proper air-fuel ratio is vital in today's engines. Be sure the carburator or fuel
injection system has been remanufactured to manufacturer's specifications. Manifold
and cylinder head surfaces should be checked and in good condition (resurface if
necessary). Be sure the cylinder heads and manifolds are torqued and retorqued in
proper sequence if required. Air seepage can cause lean air-fuel ratio which causes
detonation. Check fuel pump for proper pressure.
3. Ignition or diesel fuel injection system should be properly serviced or calibrated,
and engine timing corrected. Proper valve lash or clearance is very important.
4. Be sure to use spark plugs of the correct heat range and gap as specified by the
engine manufacturer. Check electronic sensors and sending units for proper
operation. Vacuum lines must be properly routed and connected to the appropriate
fittings to ensure operation of emission control devices and related engine controls.
5. Check the exhaust thermostat control (commonly called the thermostat housing) to be certain it is free and operating properly. Clean the intake manifold to remove deposits from the various passages.
6. Rebuild or replace hose lines to ensure they are free from
deposits so that the cooling system can function properly. Restrictions can cause
overheating. Thermostats should be checked or replaced with one of the correct
temperature. Use the proper pressure cap as specified by the engine manufacturer,
and make sure it is properly seated.
7. Important - replace filter elements. Thoroughly check engine accessories which
are to be reused. Clean them internally and externally before installing.
8. If using coolant (closed cooling) coolant used should be blended to a mixture of no more than 60% antifreeze and 40% water. We
recommend that a good sealer with rust inhibitors be added to the cooling system.
This will tend to prevent rust and scale deposits and guard against coolant seepage.
9. Before releasing the engine for regular service, check the air-fuel ratio.
RECOMMENDED "BREAK-IN" PROCEDURES FOR REMANUFACTURED ENGINES
Protect the investment you have in your engine. Take the time to read and follow
L Before starting the engine for the first time, be sure it has been properly pre-
2. Never add cold water to the cooling system while the engine is running. The
engine should be allowed to run at normal operating temperature.
3. Start engine and run at fast idle, approximately 1500 RPM, and check the oil
pressure. Run the engine for 30 minutes even though coolant may rise to operating
temperature in a few minutes. Adjust tappets, if required, carburetor and ignition
timing. If the coolant should "boil over," stop engine and allow to cool. Then start
again and proceed as above.
4. Retorque ,manifolds ,risers, and carburator to engine manufacturer's
specifications in proper sequence after break in. Re adjust tappets If necessary.
5. Start engine again and make a test run on the water at 1500 rpm for 10 hours.
check shifting on drive or transmission. NOTE: Applying loads to the engine for short periods of time causes increased ring
pressure against the cylinder walls and helps to seat the rings, so before going full throttle for extended times, go up and down a few times before.