Kohler 55EFOZDJ Generator Set

⚠ Kohler SiteTech is needed to power the ECU on these generator set models.

1. Select the Governors tab and open the RPM of Droop drop-down list.
2. Select 1.7 Hz (50 rpm).
3. If reprogramming, select Program when linked to a powered ECU.

⚠ Setup and adjustments of the ECU only by an authorized Kohler distributor/dealer; settings are password protected.

Tools: John Deere Service Advisor software, laptop, Internet connection

1. Login to John Deere Service Advisor software with user name and password; click Sign In.
2. Click the I Agree button.
3. Click the Jobs icon.
4. Open an existing job or click Start a New Job.
5. Enter a job name and click Next.
6. Enter the engine model and click the search button.
7. Enter the Engine Serial Number and click Use this Model.
8. Click Finish.
9. Click Reprogramming.
10. Check the ENGINE box to activate the Action drop-down list.
11. Select Download Selected Payload(s) and click Go.
12. Select Reprogramming current ECU and click Done.
13. After status changes to Downloaded, click Back.
14. Check ENGINE, select Start Reprogramming, and click Go.
15. Acknowledge notices and open the ECU parameters window.

⚠ Kohler SiteTech is needed to power the ECU on these generator set models.

1. Select the Speed Control tab.
2. Ensure Disable All Throttle is checked; all throttle selections become disabled.
3. If reprogramming, select Program when linked to a powered ECU.

⚠ Affix voltage reconnection decal 246242 after reconnecting to a voltage different from the nameplate.

1. Place the generator start/stop switch in the STOP position.
2. Disconnect generator set engine starting battery, negative (--) lead first.
3. Disconnect power to battery charger, if equipped.
4. Use Figure 8-3 to determine voltage configuration and reconnect leads as needed; route CT leads per diagram.

⚠ Hazardous voltage. Operate the generator set only when all guards and electrical enclosures are in place.

1. Place the generator set master switch in the OFF position.
2. Disconnect the generator set engine starting battery, negative (--) lead first.
3. Remove the six screws from the right side junction box panel and remove the panel.
4. Install the circuit breaker on the new panel with the screws and washers, ON side toward the rear.
5. Attach stator leads L1, L2, and L3 to the extension leads or line side of the circuit breaker.
6. Connect the neutral stator leads to the L0 stud.
7. Connect the load side of the circuit breaker to customer-supplied craft wiring and neutral to L0.
8. Attach the new panel to the junction box using the original six screws.
9. Check master switch is OFF and reconnect the starting battery, negative (--) lead last.

⚠ Never operate without a functioning carbon monoxide detector.

1. Shut down; disconnect battery charger and battery, negative lead first.
2. Inspect manifold, mixing elbow, hoses, clamps, silencer and outlet flapper for cracks, leaks, corrosion.
3. Check hoses for softness, cracks, leaks or dents; replace as needed.
4. Check for corroded or broken metal parts and replace them.
5. Check for loose, corroded, or missing clamps; tighten or replace.
6. Confirm the exhaust outlet is unobstructed.
7. Look for carbon or soot residue indicating exhaust leaks; seal leaks.
8. Reconnect battery (negative lead last) and battery charger power, if equipped.

⚠ Follow the instructions included with the impeller kit.

Tools: Impeller kit, Silicon grease

1. Shut down the generator set; disconnect battery charger and battery, negative lead first.
2. Close the seacock.
3. Remove the seawater pump cover plate and remove the impeller.
4. Inspect impeller for damaged, cracked, broken, missing or flattened vanes.
5. Lubricate the impeller with soapy water before installation.
6. Install the impeller, pushing and rotating it in the engine rotation direction.
7. Inspect cover plate and gasket; lubricate gasket with silicon grease and attach.
8. Open the seacock, reconnect battery, start and check for leaks.

⚠ Hot coolant and steam can cause severe injury or death; allow the engine to cool.

1. Press the generator set OFF/RESET button to shut down the generator set.
2. Disconnect the power to the battery charger, if equipped.
3. Disconnect the engine starting battery, negative (-) lead first.
4. Deenergize the block heater, if equipped.
5. Remove the pressure cap to allow the entire system to drain.
6. Open the radiator and/or engine block coolant drain valve(s).
7. Allow the system to drain.
8. If deposits are present, refer to the flush and clean procedure.

Tools: Radiator cleaner

1. Flush the cooling system with clean water.
2. Use a radiator cleaner if the radiator still has mineral deposits.
3. Follow the radiator cleaner manufacturer's instructions.
4. Drain, clean, and flush the coolant recovery tank.

⚠ Do not add coolant to a hot engine; it can crack the cylinder block or head.

1. Remove the pressure cap.
2. Close the coolant drain valve(s) and tighten cooling system hose clamps.
3. Open the air-bleed petcocks; close them when coolant begins to flow.
4. Add coolant additives or water pump lubricants per the engine manufacturer.
5. Fill with 50% ethylene glycol and 50% clean, softened water.
6. Replace the pressure cap and fill the coolant recovery tank to the low mark.
7. Reconnect battery (negative lead last) and battery charger power, if equipped.
8. Run until the thermostat opens, stop, cool, and top up coolant.

⚠ Do not overtighten the retaining cap.

Tools: Mild detergent

1. Press OFF/RESET; disconnect battery charger and battery, negative lead first.
2. Remove the retaining cap and remove the reed valve for inspection.
3. Use a mild detergent to remove residue and oxidation from the reed valve.
4. Clear blockage from the reed valve opening.
5. Replace the siphon break if the reed valve is cracked or deteriorated.
6. Install the reed valve into the mounting base with the valve downward.
7. Install and only finger tighten the retaining cap.
8. Reconnect battery (negative lead last) and battery charger power, if equipped.

Tools: Float/equalize battery charger or trickle charger

1. Place the generator set master switch in the OFF/RESET position.
2. Disconnect the battery(ies), negative (-) lead first.
3. Clean the battery per the battery manufacturer's instructions.
4. Place the battery in a cool, dry location.
5. Connect to a float/equalize charger or charge monthly with a trickle charger.
6. Maintain a full charge to extend battery life.