0382292 JOHNSON BEARING HOUSING ASSY.

Engine Crankcase Oil
Check Oil Level
1. Check the oil level only with the engine stopped.
Do Not Overfill to reach above the top of the FULL mark on the dipstick.
Operating your engine when the oil level is above the FULL mark, could cause your crankshaft to dip into the oil. The crankshaft dipping into the oil could create air bubbles and could cause excessively high oil temperatures which can reduce the lubricating characteristics of the oil and lead to bearing damage. Also, a crankshaft that dips into the oil during engine operation, could result in a loss of power.2. Maintain the oil level between the FULL and ADD marks on the dipstick. If necessary, remove the fill cap and add oil through the fill tube.Cooling System
Check Coolant Level
Refer to the "Cooling System Specifications" section of this manual before adding coolant.
1. Check the coolant level with the engine stopped and cold.2. Remove the cooling system pressure cap slowly to relieve any pressure.3. Maintain the coolant level within the recommended limit.4. Inspect the expansion tank cap. Replace it if damaged. Install the expansion tank cap.Walk-Around Inspection
Check Engine
For maximum service life of your engine, make a thorough walk-around inspection before starting the engine. Look for such items as oil or coolant leaks, loose bolts, worn vee belt(s), loose connections and trash build-up. Remove trash build-up and make repairs as needed.Keep a close watch for leaks. If leaking is observed, find the source and correct the leak. If leaking is suspected, check the fluid levels more frequently than the recommended service intervals prescribed in this publication until a leak is found and fixed or until the suspicion for a leak has been proven to be false.Wipe all fittings, caps and plugs before servicing.1. Inspect the coolant hoses, and crankcase breather hose for cracking and loose clamps.2. Inspect all vee belt(s) for cracks, breaks or other damage. Check for proper belt tension.3. Inspect the water pump for leaks. The water pump seal is lubricated by coolant in the cooling system. It is normal for a small amount of leakage to occur as the engine cools down and parts contract.4. Inspect the engine for oil leaks, such as front and rear crankshaft seals, crankcase, oil filter and valve cover.5. Inspect the fuel system for leaks, loose fuel line clamps and fittings, and loose or worn hoses. If leaking is observed, find the source and correct the leak. If leaking is suspected, check the fluid levels more frequently than the recommended service intervals prescribed in this publication.Continue to check the fluid levels more frequently until a leak is found and fixed, or until the suspicion for a leak has been proven to be false.6. Inspect wiring for loose connections and worn or frayed wires.7. Inspect the air intake system hoses and elbows for cracks and loose clamps.8. Inspect engine-to-frame ground strap for good connection and condition.
Typical Example9. Inspect the coolant level in the expansion tank. The level must be to the bottom of the expansion tank filler neck.10. Disconnect any battery chargers that are not protected against the starter current drain.11. All guards must be in place. Repair or replace all guards that are damaged.Marine Transmission Oil
Check Oil Level
1. Check the oil level at LOW IDLE with the marine transmission engaged. Maintain the oil level at the FULL mark on the dipstick.2. If necessary, remove the fill cap and add oil through the fill tube. Do not overfill the marine transmission.Air Starter Lubricator Oil
Check Level
Never allow the air lubricator jar to become empty. The starting motor will be damaged by lack of proper lubrication.
The vanes of the starting motor are lubricated with a fine oil mist from the motor oiler while the motor is operating.When the oiler bowl becomes half empty, remove the oil filter plug and fill the bowl with clean oil or diesel fuel or kerosene. Refer to the Lubricant Viscosities chart for proper oil.Servicing Oiler Bowl
1. Shut off the air supply to the starter control valve.2. Open the drain valve at the bottom of the bowl. This valve depressurizes the bowl and allows the lubricant to drain.3. Remove and clean the bowl, using warm water only.4. Dry the bowl with pressurized dry air. Inspect for cracks. Replace if necessary.5. Install bowl and close the drain valve.6. Fill bowl with clean lubricant. Refer to the Lubricant Viscosities chart for proper lubricant.7. Turn on the air supply to the starter control valve.Adjusting Oiler Feed
If necessary, adjust the oiler feed to release approximately four drops of lubricant per minute into the starting motor air stream.1. Be sure the fuel supply to the engine is turned off.2. Pull up on the air start control lever and crank the engine.3. Count the drops of lubricant released per minute into the air stream.* Turn the valve needle (the uppermost knob on the oiler) counterclockwise to increase the number of drops per minute.* Turn the valve needle clockwise to decrease the number of drops per minute. Drip rates should only be made under an average steady flow condition. Once established, the lubricator will automatically adjust the drip rate proportionally to variations in air flow.Air Tank
Drain Water
This should be performed daily or as necessary to remove water from the air system. Water in the air system could freeze, corrode internal parts or cause the air system to malfunction.Open drain valve on bottom of air tank to drain water and sediment. Close drain valve.Engine Air Cleaner
Check Air Cleaner Differential Pressure Gauge (Optional Air Cleaner)
The air cleaner differential pressure gauge is located in the instrument panel. The air cleaner differential pressure gauge indicates the difference of air pressure between the inlet side (dirty side) and the engine side (clean side) of the filter element. As the element becomes plugged, the difference in pressure between the two side of the element will increase. The maximum air cleaner pressure differential is 7.5 kPa (30 in.) water.
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