Contents

OPS - DIESEL ENGINE Z482, D662, D782, Z602, D722,D902 (16676-8917-1)
Foreword
Safety First
Contents Page
- Safe Operation
- Servicing of the Engine
- Names of Parts
- Pre-Operation Check
  - Break-In
  - Daily Check
- Operating the Engine
  - Starting the Engine (normal)
  - Cold Weather Starting
  - Stopping the Engine
  - Checks During Operation
    - Radiator Cooling Water (coolant)
    - Oil Pressure Lamp
    - Fuel
    - Colour of Exhaust
    - Immediately Stop the Engine if:-
  - Reversed Engine Revolution and Remedies
    - How to Tell When the Engine Starts Running Backwards
    - Remedies
- Maintenance
  - Service Intervals
- Periodic Service
  - Fuel
    - Fuel Level Check and Refueling
    - Air Bleeding the Fuel System
    - Checking the Fuel Pipes
    - Cleaning the Fuel Filter Pot
  - Engine Oil
    - Checking Level and Adding Engine Oil
    - Changing Engine Oil
    - Replacing the Oil Filter Cartridge
  - Radiator
    - Checking Coolant Level, Adding Coolant
    - Changing Coolant
    - Checking Radiator Hoses and Clamp Bands
    - Precaution at Overheating
    - Cleaning Radiator Core (outside)
    - Cleaning the Radiator (inside)
    - Anti-Freeze
  - Air Cleaner
  - Electric Wiring
  - Fan Belt
    - Adjusting Fan Belt Tension
- Carriage and Storage
  - Carriage
  - Storage
- Troubleshooting
- Specifications
- Wiring Diagrams

Kubota D662-E Operator's Manual

Pages 38

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Kubota D662-E Engine Specification

The Kubota D662-E engine is a compact, water-cooled, three-cylinder diesel engine renowned for its reliability and efficiency. Designed primarily for small equipment applications, it features a displacement of 0.662 liters and operates with a bore and stroke of 67 mm x 68 mm. The engine delivers a maximum output of approximately 16 horsepower at 3600 RPM, providing robust performance for its size. Its direct injection fuel system enhances fuel efficiency and ensures cleaner combustion, contributing to lower emissions. The D662-E engine is equipped with a pressurized lubrication system that ensures optimal operation under varying conditions, thereby prolonging engine life. It incorporates a counterbalanced crankshaft that reduces vibrations, contributing to smoother operation and reduced noise levels. The engine's cooling system is water-based, maintaining optimal operating temperatures and preventing overheating during prolonged use. Featuring a compact and lightweight design, the D662-E is ideal for applications where space is at a premium, such as in compact tractors, small generators, and other industrial equipment. Its robust construction and high-quality materials ensure durability and longevity, making it a preferred choice in demanding environments. With a focus on easy maintenance and serviceability, the Kubota D662-E includes user-friendly features like accessible oil and fuel filter locations, simplifying routine checks and replacements. Its adherence to stringent emission standards reflects Kubota's commitment to environmental sustainability, positioning the D662-E as an environmentally friendly option within the small diesel engine market. Overall, the Kubota D662-E engine is engineered to deliver reliable power with minimal environmental impact, making it a versatile and efficient choice for various industrial applications.

Kubota D662-E Engine F.A.Q.

What is the recommended oil type for the Kubota D662-E engine?

The recommended oil type for the Kubota D662-E engine is SAE 10W-30 or 15W-40, depending on the operating temperature.

How often should the oil be changed in a Kubota D662-E engine?

The oil in a Kubota D662-E engine should typically be changed every 100 hours of operation or annually, whichever comes first.

What is the procedure for bleeding air from the fuel system in a Kubota D662-E engine?

To bleed air from the fuel system, open the bleed screw near the fuel filter and manually pump the fuel lift pump until fuel flows without bubbles.

How can I troubleshoot starting issues with the Kubota D662-E engine?

Check the battery charge, inspect the fuel system for clogs, and ensure the glow plugs are functioning properly.

What is the valve clearance specification for the Kubota D662-E engine?

The valve clearance for the Kubota D662-E engine should be set at 0.15 mm for both intake and exhaust valves when cold.

How do I perform basic maintenance on the Kubota D662-E engine?

Basic maintenance includes regular oil and filter changes, checking coolant levels, and inspecting the air filter for cleanliness.

What are common causes of overheating in the Kubota D662-E engine?

Common causes include a clogged radiator, low coolant levels, or a malfunctioning thermostat.

How do I adjust the idle speed on a Kubota D662-E engine?

To adjust the idle speed, locate the idle adjustment screw on the fuel injection pump and turn it clockwise to increase or counterclockwise to decrease the idle speed.