Cummins/Onan E124V Generator Set

Tools: 1/8 inch drill bit, wrench

1. Shut off engine, remove air cleaner outer cover and filter element.
2. Loosen choke rod swivel clamp screw.
3. Lock throttle control lever with pin (1/8 inch drill bit) so pin acts as stop for choke lever.
4. Push choke rod towards carburetor to fully open choke.
5. Rotate choke lever towards carburetor until it bears against pin stop, tighten swivel clamp screw.
6. Remove lock pin and check choke linkage operation. Replace damaged components.
7. Reassemble air cleaner.
8. Adjust throttle and choke control cables.

Tools: 1/8 inch drill bit, wrench

1. For single-cable: shut off engine, loosen throttle cable clamp.
2. Lock throttle lever with pin (1/8 inch drill bit).
3. Push speed control lever to high speed position.
4. Hook cable wire into throttle lever, pull out slack, tighten clamp. Remove lock pin.
5. For two-cable: repeat steps 1-3, then push choke knob to full-open.
6. Hook choke cable wire into choke lever, push choke rod towards carburetor, pull out slack, tighten clamp.

⚠ Adjusting the engine speed to a value above that specified by the equipment manufacturer could cause the equipment to operate at speeds in violation of Federal and State Standards for Safety for the equipment.

⚠ Moving parts can cause severe personal injury or death. Take care when measuring engine speed with a tachometer and follow the meter instructions. You must be a qualified mechanic.

Tools: tachometer

1. Normally no need to adjust engine speed. Instructions are for equipment manufacturer. Attempt only by qualified mechanic using accurate tachometer.
2. Set low-idle and high-idle speeds to values specified in equipment Operator's Manual. If absent, adjust low-idle to 1,100 RPM and high-idle to 3,400 RPM.
3. Start engine, observing all equipment manufacturer's instructions and precautions.
4. If throttle cable already connected, loosen clamp at engine and back out low-idle speed stop screw so speed stop screw on carburetor touches its stop. Adjust engine speed to 1,000 RPM with carburetor
5. Turn low-idle speed stop screw to obtain specified low-idle speed.
6. Move engine throttle link up against its stop tang and hold it there while bending tang as necessary to obtain specified high-idle speed.
7. Hook engine throttle link with throttle cable, pull slack out of throttle cable and tighten clamp. Check for full, smooth movement of engine throttle link between its two stop positions when equipment

⚠ Adjusting engine speed above equipment manufacturer spec could cause violation of safety standards.

⚠ Moving parts can cause severe personal injury or death.

Tools: tachometer, 1/8 inch drill bit, wrench

1. Remove outer cover of air cleaner and set up tachometer.
2. Start engine.
3. Lock throttle control lever with pin (1/8 inch drill bit) in control plate.
4. Loosen choke rod swivel clamp screw and push choke rod towards carburetor to fully open choke.
5. Adjust high-idle speed by rotating engine control plate. Loosen pivot bolt 1/8 turn and set bolt 1/4 turn. Retighten.
6. Adjust low-idle speed by turning idle speed screw. Remove lock pin and move throttle to lowest position.
7. Shut off engine and readjust choke.

1. Refer to Table 2 for scheduled foam wrapper maintenance and air cleaner element replacement. See Figure 4.
2. For foam wrapper only: do not remove inner air cleaner cover. Remove and wash foam wrapper in water and detergent.
3. Squeeze foam wrapper dry like a sponge. Rinse with clean water and allow to dry.
4. Coat wrapper evenly with one tablespoon (14 grams) of SAE 30 engine oil. Knead oil into wrapper and wring out excess oil.
5. Install foam wrapper over paper air cleaner element by stretching it over inner cover. Completely cover all exposed paper pleats.
6. Replace foam wrapper when it becomes torn or stretched.
7. For element replacement: pull choke knob to full-choke position to close choke plate. Remove outer cover and wipe away loose dust and debris.
8. Remove inner air cleaner mounting nut and cover.
9. Remove air filter paper element and foam wrapper from engine. Wipe off dust and debris from air cleaner base.
10. Install new paper element and secure with inner cover and mounting nut. Reinstall foam wrapper and outer cover. Reconnect crankcase breather tube.

1. Remove the through-bolt and cover.
2. Reassemble with a new air filter element and wrapper.
3. Do not over-tighten the through bolt.

⚠ Batteries give off explosive gases; do not smoke or allow flames or sparks near batteries

⚠ Battery electrolyte can cause severe eye damage and skin burns

Tools: Terminal puller tool, Battery hydrometer, Goggles, Rubber gloves, Protective apron

1. Keep the battery case clean and dry.
2. Make certain battery cable connections are clean and tight.
3. Remove the negative (-) cable first and connect it last.
4. Remove corrosion with an ammonia or baking soda solution; flush with clean water.
5. Add distilled water to each cell to the split-level marker if not maintenance-free.
6. Check specific gravity of each cell with a hydrometer; charge if below 1.215.
7. Stop charging when specific gravity reaches 1.260 at approximately 80° F (27° C).

⚠ Contact with used engine oil can cause cancer or reproductive toxicity

⚠ Crankcase pressure can blow hot engine oil out the fill opening causing severe burns

Tools: Pan, Rubber gloves

1. Place a pan under the oil drain plug; run engine until warm, then shut off.
2. Remove the oil fill cap.
3. Open the oil drain valve and allow all oil to drain.
4. Close the oil drain valve.
5. Spin off the oil filter canister, drain it and discard per local regulations.
6. Wipe the filter mounting surface; oil the new gasket and spin on new filter 1/2 to 3/4 turn after gasket touches.
7. Refill with API Class SG or SH oil of the correct viscosity; check level.
8. Screw the oil fill cap on securely; recycle used oil.

⚠ Crankcase pressure can blow hot engine oil out the fill opening causing severe burns

1. Park the vehicle on level ground and shut off the genset.
2. Remove oil fill cap/dipstick and wipe it clean.
3. Screw the cap back on and remove it to read the oil level.
4. Add API Class SG or SH oil of the correct SAE viscosity until full mark is reached.
5. Screw the oil fill cap on securely.

⚠ Chemical combustion chamber cleaners are caustic, toxic and flammable; flush skin or eye contact with water 15 minutes

Tools: Safety goggles, Rubber gloves

1. Park the vehicle outside where fumes and soot can disperse.
2. Run the genset until up to normal operating temperature.
3. Stop the genset and remove the air filter for access.
4. Restart and spray "4C" into the carburetor throat; flood engine to stall just before can empties.
5. Let the genset sit 15 minutes.
6. Restart and load nearly to full power for about five minutes.

⚠ A hot muffler can cause severe burns

1. Let the muffler cool down.
2. Remove the cleanout plug from the bottom of the muffler.
3. Restart the genset and load it nearly to full power for about five minutes.
4. Stop the genset, allow the muffler to cool, then reinstall the plug.

⚠ Hot exhaust parts can cause severe burns. Allow the engine time to cool before servicing the exhaust system.

⚠ A clogged flywheel air inlet screen or dirty cooling fins can cause overheating and engine damage. Keep cooling fins and air inlet screen clean.

⚠ Crankcase pressure can blow hot engine oil out the fill tube causing severe burns. Always stop the engine before removing the oil fill cap.

1. Inspect fuel lines and fittings for leaks. Repair leaks immediately.
2. Look and listen for exhaust system leaks while engine is running. Look for cracks and severe rusting in muffler and tailpipe. Have all leaks repaired before continuing operation.
3. Check engine for dirt and debris and clean flywheel air inlet screen and cylinder cooling fins as necessary.
4. Check engine oil level. Equipment must be parked on level surface and engine stopped. Wait a minute for oil to settle. Turn oil fill cap counterclockwise and lift from fill tube. Wipe dipstick clean a
5. If oil level is low, add API Class SG or SH oil having SAE viscosity grade appropriate for expected temperatures, as indicated by Table 1. Do not fill above Full mark.
6. Reinstall dipstick and cap after checking or adding oil, turning clockwise until secure.