Briggs & Stratton 040298 User Manual

Home Generator System
Manual 278994GS Rev. -
BRIGGS & STRATTON
SERVICE & TROUBLESHOOTING MANUAL
HOME GENERATOR SYSTEM - 7kW
Not for
Reproduction

Briggs & Stratton 040298 Specifications

General

Brand	Briggs & Stratton
Model	040298
Category	Portable Generator
Language	English

Summary

Section 1 - Safety, Maintenance and Adjustments

Generator Clearances

Lifting the Generator

Signal Words in Safety Messages

Explains safety alert symbols and signal words for hazard communication.

General Location Guidelines

Safety Symbols and Meanings

Illustrates and defines various safety symbols used in the manual.

System Controls

System Connections

Generator AC Connection System

Automatic Operation

Checking Automatic Operation

Generator Maintenance

Adjusting the Valve Lash

Oil Service

Battery

Servicing the Battery

Charging the Battery

Engine Adjustment

FAULT CODE (FC_X) INDICATIONS

Resetting the Fault Code Detection System

Procedure to reset the fault code detection system after correcting fault conditions.

SECTION 2 - TROUBLESHOOTING

Control Panel

Overview of the control panel functions, components, and access for troubleshooting.

(FC_1) LOW BATTERY VOLTAGE

TEST 1 - Check Battery

Procedure to test the generator battery's state-of-charge and condition.

TEST 3 - Check Utility Voltage Input

Procedure to measure AC voltage input from utility to the control panel.

TEST 2 - Check Trickle Charge Voltage at Battery

Procedure to measure trickle charge voltage at the battery terminals.

TEST 4 - Measure Trickle Charge Output Voltage at control panel

Procedure to measure trickle charge output voltage at the control panel board.

(FC_3) LOW VOLTAGE

TEST 1 - Measure Circuit Breaker Load-Side Voltage

Procedure to measure 240VAC at the load-side of the generator circuit breaker.

TEST 2 - Measure Generator Voltage at control panel

Procedure to measure 240VAC at the control panel pins E1 and E2.

TEST 3 - Measure Circuit Breaker Line-Side Voltage

Procedure to measure 240VAC at the line-side of the generator circuit breaker.

TEST 4 - Check Alternator

Measure Winding Resistance

Check Rotor Resistance Through the Brush Wires

Test Stator AC Power Windings

Check Stator Excitation Windings

Bypass the AVR

(FC_4) ENGINE DOES NOT START

Troubleshooting Engine No-Start Conditions

General steps to reset fault code system and initiate engine start.

TEST 3 - Check Fuel Delivery System

Ensuring adequate fuel supply and valve operation for engine starting.

TEST 6 - Check Fuel Regulator

TEST 4 - Check Fuel Supply Pressure

Procedure to measure fuel pressure at the generator inlet.

TEST 1 - Visually Inspect Generator

Procedure for visually inspecting the generator for electrical faults.

TEST 5 - Check Fuel Solenoid

TEST 2 - Check Spark

Procedure to test for spark at the spark plug using a tester.

Cranking Problems

TEST 7 - Check Battery Components

TEST 9 - Check Control Panel Board Output

TEST 8 - Check Starter Contactor Signal

TEST 10 - Check Starter Motor

FC_5 Low Frequency & FC_6 Engine Overspeed

Test #1 Measure No-Load and Full-Load Output Frequency at Circuit Breaker (CB)

Test #2 Measure Frequency on E1 & E2 at control panel

(FC_5) UNDER FREQUENCY

Check No-Load Frequency

Check Full-Load Frequency

TEST 1 - Check No-Load & Full-Load Frequency

TEST 2 - Measure Frequency at #E1 & #E2

(FC_6) ENGINE OVERSPEED

(FC_7) HIGH TEMPERATURE

TEST 1 - Check Over-Temperature Switch

TEST 2 - Check Wire #95

(FC_8) TRANSFER SWITCH FAILURE

SECTION 3 - UNIT DISASSEMBLY

Engine / Alternator Removal

SECTION 4 - GENERATOR SPECIFICATIONS