Kubota D1703 Engine

How to read your Kubota engine serial & model number →

• SWITCH OFF lamp flashes.
  Cause: Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used.
  Fix: Move the Run/Stop/Remote switch to the Remote position for automatic starting.
• PRE LO OIL PRES lamp lights. Engine continues to operate.
  Cause: Indicates engine oil pressure has dropped to 20 psi (138 kPa).
  Fix: If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedures in step 5.
• PRE HI ENGINE TEMP lamp lights. Engine continues to operate.
  Cause: Indicates engine is operating near its capacity and temperature has risen to approximately 220°F (104°C) or coolant level is low on optionally wired sets.
  Fix: If generator is powering non-critical and critical loads and cannot be shut down, use the following: a. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. If engine can be stopped, follow procedure in step 3.
• OVERCRANK lamp lights and engine stops cranking.
  Cause: Indicates possible fuel system problem.
  Fix: A. Check for loss of engine prime, empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty fuel filter and replace if necessary (see Maintenance section). c. Check for dirty or plugged air filter and replace if necessary (see Maintenance section). d. Reset the control and restart after correcting the problem. Contact an authorized service center for service if none of the above.
• LO OIL PRES lamp lights. Engine shuts down.
  Cause: Indicates engine oil pressure has dropped to 14 psi (97 kPa).
  Fix: Check oil level, lines and filters. If oil system is OK but oil level is low, replenish. Reset control and restart. Contact an authorized service center if oil pressure is not in the range of 29 to 65 psi (200 to 447 kPa).
• LO FUEL LAMP lights. Engine shuts down and LO OIL PRES lamp lights.
  Cause: Indicates engine has run out of fuel.
  Fix: Check fuel level and replenish as required.
• LO FUEL lamp lights. Engine continues to run.
  Cause: Indicates diesel fuel supply is running low.
  Fix: Check fuel supply and replenish as required.
• LO ENG TEMP lamp lights. Set is in standby mode but is not operating.
  Cause: Lamp lights when engine coolant temperature is 70° F (21° C) or lower. Since the lamp goes out after the engine warms up, there should be no cause for alarm even during initial generator set operation.
• Line Circuit Breaker trips
  Fix: Locate the source of the overload and correct as necessary. Manually reset the breaker to reconnect the load to the generator.
• HI ENG TEMP lamp lights. Engine shuts down.
  Cause: Indicates engine has overheated (engine temperature has risen above 230°F/110°C) or coolant level is low.
  Fix: Allow engine to cool down completely before proceeding with the following checks: a. Check coolant level and replenish if low. Look for possible coolant leakage points and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check for a slipping fan belt and tighten if loose. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above.
• Green RUN lamp lights following engine startup.
  Fix: Indicates all engine systems are normal. No corrective action required.
• Fault lamp turns on during operation
  Fix: Follow the procedures listed below to locate and correct the problem. For any symptom not listed, contact an authorized service center for assistance.
• Engine will not crank.
  Cause: Indicates possible fault with control or starting system.
  Fix: A. Fault lamp on. Correct fault and reset control. b. Poor battery cable connections. Clean the battery cable terminals and tighten all connections. c. Discharged or defective battery. Recharge or replace
• Engine starts from generator control panel but will not start automatically or from a remote panel. (Note: The Run/Stop/Remote switch must be in the Remote position for automatic or remote starting).
  Cause: Remote circuit breaker is tripped.
  Fix: Reset breaker and restart. Contact an authorized service center if breaker trips after resetting.
• Engine runs and then shuts down, OVERSPEED lamp lights.
  Cause: Indicates engine has exceeded normal operating speed.
  Fix: Contact an authorized service center for service.

Compiled from service & troubleshooting documentation across every generator set that uses the Kubota D1703.

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.