Kubota WG972-E4 (EFI) Gasoline, LPG, Natural Gas Engine Workshop Manual PDF 9Y111-11080

Workshop manual contains detailed service and repair information, installation instructions, special instructions, troubleshoot and any additional information for Kubota gasoline, LPG, natural gas engines WG972-E4 (EFI).
This manual includes detailed illustrations, pictures, diagrams, which help to get a detailed description with pictures of all the engine system, using which the user can determine the installation location spare parts, etc.
This workshop manual comes in PDF format. We recommend to use Adobe PDF Reader, to be sure all images / graphics will display correctly.

CONTENTS:
INFORMATION
1. SAFETY FIRST
2. SPECIFICATIONS
3. EMISSION REGULATION
[1] GENERAL
[2] IMPORTANT ITEMS OF EXHAUST EMISSION REGULATION
(1) Important Notice
(2) Emission-Related Installation Instructions
4. PERFORMANCE CURVES
5. DIMENSIONS
6. WIRING DIAGRAM

GENERAL
1. ENGINE IDENTIFICATION
[1] ENGINE MODEL NAME, CODE NUMBER AND ENGINE SERIAL NUMBER
[2] TAMPER RESISTANCE
[3] E4 ENGINE
[4] CYLINDER NUMBER
[5] CATALYTIC MUFFLER / CONVERTER
2. GENERAL PRECAUTIONS
3. MAINTENANCE CHECK LIST
4. CHECK AND MAINTENANCE
[1] DAILY CHECK POINTS
[2] CHECK POINTS OF INTIAL 50 HOURS
[3] CHECK POINTS OF EVERY 50 HOURS
[4] CHECK POINTS OF EVERY 100 HOURS
[5] CHECK POINTS OF EVERY 200 HOURS
[6] CHECK POINTS OF EVERY 1000 HOURS
[7] CHECK POINTS OF EVERY AFTER 1000 HOURS
[8] CHECK POINTS OF EVERY 1 YEAR
[9] CHECK POINTS OF EVERY 2 YEARS
5. SPECIAL TOOLS

MECHANISM
1. ENGINE BODY
[1] CYLINDER BLOCK
[2] HALF-FLOATING HEAD COVER
[3] CYLINDER HEAD
[4] CRANKSHAFT
[5] PISTON AND PISTON RING
[6] OIL PAN
[7] CONNECTING ROD
[8] CAMSHAFT
[9] ROCKER ARM ASSEMBLY
[10] INLET AND EXHAUST VALVES
[11] FLYWHEEL
[12] CLOSED BREATHER
2. LUBRICATING SYSTEM
[1] GENERAL
[2] OIL PUMP
[3] RELIEF VALVE
[4] OIL FILTER CARTRIDGE
[5] OIL PRESSURE SWITCH
3. COOLING SYSTEM
[1] GENERAL
[2] COOLING FIN
[3] WATER PUMP
[4] THERMOSTAT
[5] RADIATOR
[6] RADIATOR CAP
4. FUEL SYSTEM
[1] GENERAL
[2] FUEL FILTER (GASOLINE LINE) [WG972-GL, WG972-N]
[3] FUEL PUMP (GASOLINE LINE) [WG972-GL, WG972-G]
[4] ELECTRONIC THROTTLE BODY (ETB)
[5] INJECTORS AND FUEL INJECTION RAIL (GASOLINE LINE) [WG972-GL, WG972-G]
[6] LOCK OFF VALVE (GAS LINE) [WG972-GL, WG972-L, WG972-N]
[7] REGULATOR WITH VAPORIZER (GAS LINE) [WG972-GL, WG972-L, WG972-N]
[8] MIXER (GAS LINE) [WG972-GL, WG972-L, WG972-N]
5. EXHAUST SYSTEM
[1] THREE-WAY CATALYST
[2] OXYGEN SENSOR
6. ELECTRICAL SYSTEM
[1] STARTING SYSTEM
[2] CHARGING SYSTEM
(1) General
(2) IC Regulator Built-in Type Alternator
[3] ENGINE CONTROL UNIT (ECU)
[4] WATER TEMPERATURE SENSOR
[5] TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (TMAP SENSOR)
[6] CRANKSHAFT POSITION SENSOR
[7] CAMSHAFT POSITION SENSOR
[8] IGNITION COIL

SERVICING
1. TROUBLESHOOTING
[1] FOR GENERAL
[2] FOR GASOLINE FUEL [WG972-GL, WG972-G]
[3] FOR GAS FUEL [WG972-GL, WG972-L, WG972-N]
2. SERVICING SPECIFICATIONS
3. TIGHTENING TORQUES
[1] TIGHTENING TORQUES FOR GENERAL USE SCREWS, BOLTS AND NUTS
[2] TIGHTENING TORQUES FOR SPECIAL USE SCREWS, BOLTS AND NUTS
4. CHECKING, DISASSEMBLING AND SERVICING
[1] CHECKING AND ADJUSTING
(1) Engine Body
(2) Lubricating System
(3) Cooling System
(4) Fuel System
(5) Ignition System
(6) Electrical System
[2] DISASSEMBLING AND ASSEMBLING
(1) Draining Coolant and Engine Oil
(2) External Components
(3) Cylinder Head, Valves and Oil Pan
(4) Thermostat
(5) Timing Gear, Camshaft
(6) Piston and Connecting Rod
(7) Crankshaft
(8) Starter
(9) Alternator
[3] SERVICING
(1) Combustion Chamber
(2) Cylinder Head and Valves
(3) Timing Gear and Camshaft
(4) Piston and Connecting Rod
(5) Crankshaft
(6) Cylinder
(7) Oil Pump
(8) Starter
(9) Alternator