Repair Service Manual

REPAIR MANUAL
1
KUBOTA Z402 and Z602 engines
Injection system
The injection pump delivers the quantity of fuel required to meet the driver's demand.
The injection pump preserves the engine of any overspeeding and ensures idle running stability.
The injection pump controls engine stopping when requested.
It is divided into four separate parts:
- Low pressure
- High pressure
- Regulation
- Control
The low pressure circuit comprises the:
1. Fuel tank
2. Strainer
3. Fuel pre-filter
4. Supply pump
5. Main filter
The high pressure circuit comprises the:
6. Injection pump
7. Injectors