Kubota WG752 Parts and Parts Manual PDF

Kubota WG752 Parts

The Kubota WG752 is a 3-cylinder, liquid-cooled, gasoline engine that is available in two versions: the WG752-G and the WG752-GL. The WG752-G is a gasoline-only engine, while the WG752-GL is a dual-fuel engine that can run on either gasoline or liquefied petroleum gas (LPG).

The Kubota WG752 is a versatile engine that can be used in a variety of applications, including:

  • Lawn and garden equipment
  • Generators
  • Industrial equipment
  • Construction equipment
  • Agricultural equipment

Kubota WG752 Specs


  • Type: Four-cycle, water-cooled, gasoline engine
  • Cylinder: Inline, vertical, 2 cylinders
  • Displacement: Approximately 0.748 liters (45.6 cubic inches)
  • Bore x Stroke: Varies depending on the specific model, typically around 72 mm x 72 mm (2.83 inches x 2.83 inches)
  • Fuel: Gasoline (petrol)
  • Cooling System: Liquid-cooled
  • Governor System: Mechanical or electronic (depending on model)
  • Compression Ratio: Varies depending on the specific model, typically around 8.8:1
  • Horsepower: Typically ranges from 16 to 25 horsepower (depending on application and configuration)
  • Fuel Tank Capacity: Varies depending on the application, typically ranges from 10 to 20 liters (2.6 to 5.3 gallons)
  • Oil Capacity: Varies depending on the specific model, typically ranges from 2 to 3 liters (0.5 to 0.8 gallons)

Kubota WG752 Parts List

  1. Cylinder Block: The main housing for the cylinders and other internal components.
  2. Cylinder Head: Covers the top of the cylinders and contains the combustion chambers, valves, and valve train components.
  3. Pistons: Move up and down within the cylinders to compress the air-fuel mixture and generate power.
  4. Connecting Rods: Connect the pistons to the crankshaft, converting linear motion into rotational motion.
  5. Crankshaft: Converts the reciprocating motion of the pistons into rotational motion to drive the engine.
  6. Camshaft: Controls the opening and closing of the intake and exhaust valves.
  7. Valves: Allow the intake of air-fuel mixture and the exhaust of combustion gases from the cylinders.
  8. Valve Train: Includes components such as lifters, pushrods, rocker arms, and cam followers that operate the valves.
  9. Timing Belt or Chain: Synchronizes the motion of the crankshaft and camshaft to ensure proper valve timing.
  10. Fuel System: Includes components such as the carburetor or fuel injection system, fuel pump, fuel filter, and fuel lines.
  11. Ignition System: Provides the spark necessary to ignite the air-fuel mixture in the cylinders, typically includes spark plugs, ignition coils, and distributor (if applicable).
  12. Cooling System: Keeps the engine operating at the optimal temperature, typically includes components such as a water pump, radiator, thermostat, and coolant passages within the engine block and cylinder head.
  13. Lubrication System: Provides oil to lubricate and cool the engine’s moving parts, includes components such as the oil pump, oil filter, and oil passages within the engine.
  14. Exhaust System: Guides and removes exhaust gases from the engine, typically includes the exhaust manifold, catalytic converter (if applicable), and muffler.

Kubota WG752 Parts Diagrams

You can find the parts diagram for the Kubota WG752 engine at the following resources:

  1. Coleman Equipment: They offer parts for Kubota Engine WG752 Gasoline Engines, and their website may include the parts diagram you are looking for.
  2. ManualsLib: A manual for the Kubota WG752 E3 is available on ManualsLib, which may contain the fuel diagram and other relevant information.
  3. EPcatalogs: They provide a workshop manual in PDF format for Kubota WG752-G/GL-E3, which includes technical information, repair instructions, pictures, diagrams, and circuits for the WG series engines.

Kubota WG752 Parts Manual


  1. Introduction: This section provides an overview of the manual, including its purpose and how to use it effectively.
  2. Engine Identification: Information on how to identify the engine model, serial number, and other key details needed for parts identification and ordering.
  3. Exploded Parts Diagrams: Detailed diagrams that illustrate the various components of the engine, often with part numbers and descriptions. These diagrams are typically organized by major engine systems or components, such as the cylinder head, crankshaft, fuel system, cooling system, etc.
  4. Parts Lists: A comprehensive list of engine parts, often organized by category or system. Each part is typically listed with its part number, description, and quantity required for assembly.
  5. Part Number Cross-Reference: Some manuals include cross-reference tables that allow you to find part numbers based on alternate part numbers, superseded parts, or other identifying information.
  6. Maintenance and Service Information: Basic maintenance procedures, service intervals, and recommended service parts for routine maintenance tasks such as oil changes, filter replacements, and belt adjustments.
  7. Special Tools and Equipment: Information on any special tools or equipment recommended for servicing the engine, along with part numbers and descriptions.
  8. Troubleshooting Guide: Common problems, symptoms, and troubleshooting steps to help diagnose and resolve issues with the engine.
  9. Appendices: Additional reference materials, such as torque specifications, fluid capacities, and other technical data.
  10. Index: A comprehensive index to help you quickly locate information within the manual.

Kubota WG752 Engine Rebuild Kit

A typical rebuild kit for the Kubota WG752 engine will include:

  1. Pistons: These are crucial for restoring compression and efficient combustion within the cylinders.
  2. Piston Rings: Seal the gap between the pistons and cylinder walls, preventing leakage of combustion gases.
  3. Piston Pins: Secure the pistons to the connecting rods, allowing them to move within the cylinder bore.
  4. Connecting Rod Bearings: Provide a smooth surface for the connecting rods to pivot on the crankshaft.
  5. Main Bearings: Support the crankshaft within the engine block, reducing friction and ensuring smooth rotation.
  6. Gasket Set: Includes all necessary gaskets and seals for resealing the engine components, such as the cylinder head gasket, valve cover gasket, oil pan gasket, etc.
  7. Timing Belt or Chain: Ensures proper synchronization between the crankshaft and camshaft(s) for precise valve timing.
  8. Oil Seals: Prevent oil leakage at various points in the engine, such as the crankshaft seals, camshaft seals, and valve stem seals.
  9. Valve Stem Seals: Seal around the valve stems to prevent oil from entering the combustion chambers.
  10. Camshaft Bearings (if applicable): Support the camshaft(s) within the cylinder head, reducing friction and wear.
  11. Thrust Washers (if applicable): Provide axial support for the crankshaft, preventing excessive movement.
  12. Engine Overhaul Gasket Kit: A comprehensive set of gaskets, seals, and o-rings necessary for a complete engine rebuild.
  13. Optional Components: Depending on the extent of the rebuild and the condition of existing components, you may also need items such as timing components (tensioners, guides), water pump, oil pump, and various hardware (bolts, nuts).

Kubota WG752 Spark Plugs

The Kubota WG752 engine uses NGK BCPR4ES-11 spark plugs.

  • Quantity: The WG752 engine uses two spark plugs.
  • Replacement interval: Kubota recommends replacing the spark plugs every 200 hours of operation or annually, whichever comes first.
  • Gap: The spark plug gap should be set to 0.031 inches (0.8 mm).
  • Alternatives: While NGK BCPR4ES-11 is the recommended plug, other compatible options include:
    • Champion RFN53A
    • Denso K20PR-U
    • Autolite BP4ES

Important notes:

  • Always refer to your Kubota WG752 owner’s manual for specific maintenance instructions and the latest recommendations for spark plugs and other parts.
  • Only use spark plugs that are specifically recommended for the Kubota WG752 engine. Using incorrect spark plugs can damage the engine.
  • When replacing spark plugs, it is important to follow the proper procedures to avoid damaging the engine. If you are not comfortable replacing spark plugs yourself, it is recommended that you take your Kubota WG752 to a qualified technician.

Here are some resources where you can find Kubota WG752 spark plugs:

  • Kubota dealer: Your local Kubota dealer can sell you genuine Kubota spark plugs.
  • Online retailers: Many online retailers sell Kubota spark plugs, including Amazon, eBay, and Zoro.
  • Parts stores: Some parts stores may also carry Kubota spark plugs.

Kubota WG752 Pick Up Coil

Kubota engines typically don’t use a “pick up coil” in the traditional sense, which is a component of an ignition system in some engines. The WG752 uses a different system:

  1. Ignition Coil: The WG752 uses a conventional ignition coil (part number 12581-68900) that transforms battery voltage into the high voltage needed to spark the plugs. You can find this coil readily available online and at Kubota dealers.
  2. Pickup Assembly: However, if you’re referring to a component that senses engine rotation speed, the WG752 might utilize a crank position sensor (part number 14196-68180). This sensor sends signals to the ECU for various engine functions like spark timing and fuel injection.

Kubota WG752 Muffler

The Kubota WG752 engine uses a specific muffler that helps reduce noise and emissions. Here’s what you need to know about it:

OEM Muffler:

  • Part Number: 19488-12110
  • Description: This is the original Kubota muffler designed for the WG752 engine. It ensures optimal performance and compatibility.

Aftermarket Options:

Several aftermarket mufflers are compatible with the Kubota WG752 engine. These can be more affordable than the OEM option, but it’s crucial to choose one that meets the engine’s specifications and noise regulations. Consider these factors when selecting an aftermarket muffler:

  • Compatibility: Ensure the muffler is specifically designed for the Kubota WG752 engine.
  • Material: Look for mufflers made from durable materials like stainless steel or aluminized steel.
  • Noise Reduction: Choose a muffler that meets noise level regulations in your area.
  • Performance: Opt for a muffler that offers similar performance to the OEM option in terms of power and fuel efficiency.

Popular Aftermarket Mufflers:

  • YIHETOP Muffler & Gasket (12582-12110): This option includes a mounting gasket and is known for its affordability and decent noise reduction.

    FridayParts Muffler (12582-12110): Another budget-friendly option with decent noise reduction and compatibility with several Kubota engines.

  • Before replacing the muffler, consult your Kubota WG752 owner’s manual for specific instructions and safety precautions.
  • Ensure proper tightening of all connections to prevent leaks and exhaust fumes.
  • Consider your local noise regulations when choosing a replacement muffler.
  • If you’re unsure about compatibility or installation, consult a qualified technician.

Kubota WG752 Alternator

The Kubota WG752 engine uses a 12-volt alternator to charge the battery and power the electrical system. Here’s what you need to know about it:

OEM Alternator:

  • Part Number: 15531-64017
  • Description: This is the original Kubota alternator designed for the WG752 engine. It is a 40-amp alternator that ensures reliable performance and compatibility.

Aftermarket Options:

Several aftermarket alternators are compatible with the Kubota WG752 engine. These can be more affordable than the OEM option, but it’s crucial to choose one that meets the engine’s specifications and output requirements. Consider these factors when selecting an aftermarket alternator:

  • Compatibility: Ensure the alternator is specifically designed for the Kubota WG752 engine and has the same output rating (40 amps).
  • Brand: Choose a reputable brand known for quality and reliable alternators.
  • Warranty: Look for an alternator with a good warranty to cover any potential issues.
  • Price: Compare prices from different retailers to find the best value.

Popular Aftermarket Alternators:

  • Nippon America 720-14231: This option is a direct replacement for the OEM alternator and offers a 1-year warranty.

  • BTA752 Alternator (15531-64017): This is a more affordable aftermarket option with good reviews and compatibility with various Kubota engines.

Important Notes:

  • Before replacing the alternator, consult your Kubota WG752 owner’s manual for specific instructions and safety precautions.
  • Ensure proper connection and tightening of all wires and terminals to prevent electrical issues.
  • Consider your budget and needs when choosing between an OEM or aftermarket alternator.
  • If you’re unsure about compatibility or installation, consult a qualified mechanic or technician.

Kubota WG752 Problems

Here are some common problems that users report encountering with the Kubota WG752 engine:

  1. Starting Issues: Difficulty starting the engine can be caused by various factors such as fuel delivery problems, ignition issues, or mechanical issues like low compression.
  2. Overheating: Overheating can result from cooling system problems such as a malfunctioning water pump, clogged radiator, or insufficient coolant levels.
  3. Loss of Power: A decrease in engine power can be caused by issues with fuel delivery, air intake, exhaust restrictions, or internal engine problems like worn piston rings or valves.
  4. Oil Leaks: Oil leaks can occur from various points in the engine, including gaskets, seals, or damaged components. Identifying and repairing the source of the leak is essential to prevent engine damage.
  5. Excessive Smoke: Excessive smoke from the exhaust can indicate issues such as worn piston rings, valve seals, or a malfunctioning PCV system.
  6. Fuel System Problems: Problems with the fuel system, such as clogged fuel filters, fuel pump issues, or carburetor problems, can lead to poor engine performance or stalling.
  7. Ignition System Issues: Faulty spark plugs, ignition coils, or ignition timing problems can cause misfires, rough running, or difficulty starting the engine.
  8. Vibration or Noise: Excessive vibration or unusual noises from the engine can indicate worn or damaged components such as bearings, pistons, or connecting rods.
  9. Exhaust System Concerns: Issues with the exhaust system, such as leaks, restrictions, or damage to components like the catalytic converter or muffler, can affect engine performance and emissions.
  10. General Wear and Tear: As the engine ages, components may wear out or degrade over time, requiring replacement or refurbishment to maintain optimal performance and reliability.