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Generac Power Systems GTV99O User Manual

Generac Power Systems GTV99O
65 pages
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Malual Part
No. OE2Oal
fr
SERVICE
MANUAL
F
["J
*.1
POWER
P.O.
Box 297
Phone:
(262) 473-5514
P nted
in
lJ.s.A
GiENEFIAC'
SYSTEMS,
INC.
.
Whitewater, Wl
.
53190
GTV
-1990/760
V-TWIN
OHVIENGINE
Fax:.
(262)
472-6505
Firsl Edition lssued
-
bi/xrxx
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Generac Power Systems GTV99O Specifications

General IconGeneral
Displacement999 cc
Cylinder ConfigurationV-Twin
Fuel TypeGasoline
Fuel SystemCarburetor
Ignition SystemElectronic
Governor TypeMechanical
Cooling SystemAir-cooled
Engine Type4-Cycle OHV

Summary

Rules for Safe Operation

Before Operating

Safety guidelines and checks to perform before starting the engine.

While Operating

Safety precautions and operational guidelines to follow during engine use.

Section 1: General Information

Maintenance Schedule

Outlines recommended service intervals for engine maintenance.

Fuel and Oil Recommendations

Specifies the types of fuel and oil suitable for the engine.

Change Oil

Step-by-step instructions for changing engine oil.

Change Oil Filter

Procedure for replacing the engine's oil filter.

Systematic Check

A methodical approach to diagnosing engine malfunctions.

Cylinder Balance Test

Procedure to compare the performance of each cylinder.

Check Compression

How to measure cylinder compression for performance checks.

Section 2: Ignition

Armatures

Details on ignition armatures, including testing and replacement.

Adjust Armature Air Gap

Steps to set the correct air gap for ignition armatures.

Diode Failure Diagnosis

Table and explanation for diagnosing ignition system issues via diode failure.

Section 3: Carburetion

Carburetor Removal - Vertical Shaft

Step-by-step guide for removing vertical shaft carburetors.

Carburetor Installation - Vertical Shaft

Procedure for installing vertical shaft carburetors.

Static Governor Adjustment

How to perform a static adjustment of the engine's governor.

Section 4: Governor Controls and Governor

Mechanical Governor

Details on the mechanical governor assembly and disassembly.

Dynamic Governor Adjustment

How to perform a dynamic adjustment of the engine governor.

Section 5: Cylinder Head and Valves

Remove Cylinder Heads

Steps for removing the engine cylinder heads.

Disassemble Cylinder Heads

Steps for disassembling the engine cylinder heads.

Inspect and Repair

Guidelines for inspecting and repairing cylinder heads.

Install Cylinder Head

Steps for installing the engine cylinder head.

Section 6: Electric Starter

Troubleshooting

Common starter motor problems and diagnostic approaches.

Test Starter Motor

Procedures for testing the starter motor and its components.

Testing Starter Solenoid

Specific steps to test the starter motor solenoid.

Checking Battery

Methods for checking battery condition, charge, and specific gravity.

Testing Battery

Detailed procedure for testing battery voltage under load.

Section 7: Alternators

Alternator Output Test

Procedure to test the AC output of the alternator.

Section 8: Lubrication System

Checking the Engine Oil Level

How to check and maintain the engine oil level.

Changing the Engine Oil and Filter

Detailed instructions for changing engine oil and filter.

Recommended Oil Type

Specifies the correct oil types and weights for the engine.

Section 9: Engine Disassembly

Engine Disassembly

General steps for disassembling the engine.

Section 10: Cylinder & Crankcase Cover

Section 11: Crankshaft & Camshaft

Section 12: Piston, Rings & Connecting Rod Inspection & Assembly

Section 13: Engine Assembly

Adjust Valve Clearance

How to properly adjust valve clearances.

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