Big Valley Tractor Inc. is your full service dealer for the names you know and trust. As a family owned business, we are committed to listening to your needs and finding equipment to get the job done! We stock everything from compact tractor, narrow vineyard tractors, low profile orchard tractors, UTVs, sprayers, and much, much more. You'll find Big Valley Tractor located at Bobcat Central. You can also ask us about our rentals for harvest! We're serious about quality, service, safety, and above all... customer satisfaction!

Contact us to get the service you need.

Stockton Location: (800) 266-9631

Kubota Expert Service

Kubota and Big Valley Tractor, Inc. are committed to providing quality service to meet our customers' various needs.


Big Valley Tractor, Inc.'s technicians are linked to Kubota's state-of-the-art online service center that allows them to access technical information. They are also given extensive hands-on training from factory trained instructors to develop and maintain their knowledge and skills of providing you with timely and accurate diagnoses and repairs whenever needed. Our goal is to serve our customers in an efficient, professional manner.

Maintenance Check Points

Daily Maintenance Check Points:

  • Tire pressure, wear or damage.
  • Oil or water leakage from tractor or implement.
  • Engine and transmission oil, radiator, and recovery tank, coolant, and fuel level.
  • Damage to tractor body, tightness of all bolts, nuts, and pins.
  • Implement and accessory blades and belts for wear and damage.
  • Parking brake, speed control lever, all safety switches, and easy checker functions.
  • Abnormal noise or vibrations.

For cleaning daily - Radiator screen and core, panel, and hood screens, air cleaner primary element.

Kubota Seasonal Tips (Storage)

Short-Term Machine Storage

  1. Keep the machine and supply of fuel in locked storage and remove the ignition key to prevent children or others from playing or tampering with them.
  2. To avoid sparks from an accidental short circuit, always disconnect the battery's ground cable (negative terminal) first and reconnect it last.
  3. Do not store the machine with fuel in the tank inside a building where fumes may ignite. Turn the fuel shut-off valve to the "closed" position (if equipped). Drain all fuel from tank and carburetor (if equipped). Allow the engine to cool before storing.
  4. To avoid the danger of exhaust fume poisoning, do not operate the engine in a closed building without adequate ventilation.
  5. To reduce fire hazards, clean the machine thoroughly before storage. Dry grass and leaves around the engine and mufflers may ignite.

Long-Term Machine Storage

If you intend to store your machine for an extended period of time, follow the procedures outlined below. These procedures will ensure that the machine is ready to operate with minimum preparation when it is removed from storage.

  1. Check for loose bolts and nuts, and tighten if necessary.
  2. Apply grease to machine areas where bare metal will rust. Also, apply grease to pivot areas.
  3. Inflate the tires to a pressure a little higher than usual.
  4. Change the engine oil and run the engine for about five minutes to circulate oil throughout the engine block and internal moving parts.
  5. With all implements lowered to the ground, coat any exposed hydraulic cylinder piston rods with grease.
  6. Remove the battery from the machine. Store the battery following the battery storage procedures.
  7. Keep the machine in a dry place where the machine is sheltered from rain. Cover the machine.
  8. Store the machine indoors in a dry area that is protected from sunlight and excessive heat. If the machine must be stored outdoors, cover it with a waterproof tarpaulin.
  9. Jack the machine up and place blocks under the front and rear axles so that all four tires are off the ground. Keep the tires out of direct sunlight and extreme heat.

When washing the machine, be sure to stop the engine.

Allow sufficient time for the engine to cool before washing.

Cover the machine after the muffler and engine have cooled down.

Removing the Machine from Storage

  1. Check the tire air pressure and inflate the tires if they are low.
  2. Jack the machine up and remove the support blocks.
  3. Install the battery. Before installing the battery, make sure it is fully charged.
  4. Check the fan belt tension.
  5. Check all fluid levels (engine oil, transmission/hydraulic oil, engine coolant, and any attached implements).
  6. Start the engine. Observe all gauges. If all gauges are functioning properly and reading normal, move the machine outside.
  7. Once outside, park the machine and let the engine idle for at least five minutes.
  8. Shut the engine off and walk around the machine and make a visual inspection looking for evidence of oil or water leaks.
  9. With the engine fully warmed up, release the parking brake and test the brakes for proper adjustment as you move forward. Adjust the brakes as necessary.

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