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Onan E125V User Manual

Onan E125V
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ONAN E125 V, E140V ENGINE SERVICE MANUAL
Table of Contents – Page 1 of 3
SAFETY PRECAUTIONS
GENERAL
BATTERIES
PROTECT AGAINST MOVING PARTS
FUEL SYSTEM
EXHAUST SYSTEM
EXHAUST GAS IS DEADLY
KEEP THE UNIT AND SURROUNDING AREA CLEAN
SUPPLEMENT 965-1053
PURPOSE
SERVICE MANUAL 965-0764 REVISIONS
CARBURETOR (BEGINNING SPEC E)
SECTION 1. GENERAL INFORMATION
SECTION 2. SPECIFICATIONS
SECTION 3. DIMENSIONS AND CLEARANCES
SECTION 4. ASSEMBLY TORQUES
SECTION 5. ENGINE TROUBLESHOOTING
SECTION 6. MAINTENANCE
PERIODIC MAINTENANCE SCHEDULE
ENGINE INSPECTION
AIR CLEANER AND ELEMENT WRAPPER
OIL CHANGE
OIL FILTER CHANGE
COOLING
VALVE CLEARANCE
SPARK PLUG
SECTION 7. LUBRICATION
OIL CHANGE
OIL FILTER CHANGE
OIL LEVEL CHECK
OIL PRESSURE
OIL PRESSURE RELIEF VALVE
OIL PUMP
DISASSEMBLY
ROTOR LOBE CLEARANCE
OUTER ROTOR AND PUMP BODY CLEARANCE
ROTOR AND COVER CLEARANCE
ASSEMBLY
SECTION 8. ELECTRICAL
IGNITION SYSTEM
SPARK PLUG
IGNITION COIL
IGNITION TIMING
FLYWHEEL ALTERNATORS
ALTERNATOR OUTPUT TESTS

Table of Contents

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Onan E125V Specifications

General IconGeneral
BrandOnan
ModelE125V
CategoryEngine
LanguageEnglish

Summary

Safety Precautions

General Safety Guidelines

General safety guidelines for engine operation and maintenance.

Battery Safety

Safety precautions related to handling and servicing batteries.

Moving Parts Safety

Warning to avoid contact with moving engine components.

Fuel System Safety

Safety measures for handling flammable fuel systems.

Exhaust System Safety

Warnings regarding toxic exhaust gases and system integrity.

Section 6. Maintenance

Periodic Maintenance Schedule

Schedule for routine engine maintenance based on operating hours.

Section 7. Lubrication

Section 8. Electrical

Ignition System Overview

Explanation of the ignition system's operation and components.

Alternator Output Testing

Step-by-step guide for testing alternator output and diagnosing issues.

Section 9. Fuel

Gasoline Carburetor Service

Procedures for disassembling and inspecting gasoline carburetors.

Governor Adjustments

Procedures for adjusting governor lever, idle speeds, and cables.

Idle Speed Adjustments

Steps to adjust high and low idle speeds using a tachometer.

Section 10. Starting

Solenoid Shift Starter Service

Detailed service and testing procedures for the solenoid shift starter.

Section 11. Engine Block Assembly

Compression Test Procedure

Method for testing engine compression to determine condition.

Crankshaft and Camshaft Service

Disassembly and service of crankshaft and camshaft journals and lobes.

Piston, Pin, Rings, and Rod Service

Disassembly and inspection procedures for pistons, pins, rings, and connecting rods.

Cylinder Reboring and Honing

Steps and precautions for reboring and honing the cylinder.

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