Manual - SERVICE MANUAL - GTV - 990/760 V-TWIN - OHVI ENGINE

Nov 4, 2026

Uploaded by Rizky

Service manual describing the GTV 990/760 V-TWIN OHVI engine. Includes a foreword addressing who the manual is for and the need for proper tools and trained servicing procedures. Presents rules for safe operation with DANGER, WARNING, CAUTION, and NOTE definitions, plus symbol explanations for explosion, fire, and electrical shock hazards. Provides a table of contents covering engine theory and system sections such as ignition, carburetion, controls, lubrication, disassembly, and specifications.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages87

Reading Time3 h 39 min

AccessFree to download

TABLE OF CONTENTS

RULES FOR SAFE OPERATION

DIMENSIONS AND FEATURES

4-CYCLE ENGINE THEORY

SECTION 1: GENERAL INFORMATION

SECTION 2: IGNITION

SECTION 3: CARBURETION

SECTION 4: GOVERNOR CONTROLS AND GOVERNOR

SECTION 5: CYLINDER HEAD AND VALVES

SECTION 6: ELECTRIC STARTER

SECTION 7: ALTERNATORS

SECTION 8: LUBRICATION SYSTEM

SECTION 9: ENGINE DISASSEMBLY

SECTION 10: CYLINDER AND CRANKCASE COVER

SECTION 11: CRANKSHAFT AND CAMSHAFT

SECTION 12: PISTON, RINGS AND CONNECTING ROD INSPECTION AND ASSEMBLY

SECTION 13: ENGINE ASSEMBLY

SECTION 14: SPECIFICATIONS

A WORD ABOUT SPECIAL TOOLS

Manual Part No. 0E2081 SERVICE MANUAL GTV – 990/760 V-TWIN OHVI ENGINE P. O . Box 297 • Whitewater, WI • 53190 Phone: (262) 473-5514 Fax: (262) 472-6505 Printed in U.S.A Draft Approved-04/24/03 FOREWORD This manual has been written and published by GENERAC® POWER SYSTEMS, [INC. to](INC. to) aid our dealers’ mechanics, company service personnel and general consumers when servicing the products described herein. It is assumed that these personnel are familiar with the servicing procedures for these products, or like or similar products, manufactured and marketed by GENERAC® POWER SYSTEMS, INC. It is also assumed that they have been trained in the recommended servicing procedures for these products, which includes the use of mechanics hand tools and any special tools that might be required. Proper service and repair is important to the safe, economical and reliable operation of the products described herein. The troubleshooting, testing, service and repair procedures recommended by GENERAC® POWER SYSTEMS, INC. and described in this manual are effective methods of performing such operations. Some of these operations or procedures may require the use of specialized equipment. Such equipment should be used when and as recommended. We could not possibly know of and advise the service trade of all conceivable procedures or methods by which a service might be performed, nor of any possible hazards and/or results of each procedure or method. We have not undertaken any such wide evaluation. Therefore, anyone who uses a procedure or method not recommended by the manufacturer must first satisfy himself that neither his safety, northe product’s safety, will be endangered by the service or operating procedure selected. All information, illustrations and specifications contained in this manual are based on the latest product information available at the time of publication. However, GENERAC® POWER SYSTEMS, INC. reserves the right to change, alter or otherwise improve the product at any time without prior notice. Some components or assemblies of the product described in this manual may not be considered repairable. Disassembly, repair andreassembly of such components may not be included in this manual. The engines described herein may be used to power a wide variety of products. Service and repair instructions relating to any such products are not covered in this manual. For information pertaining to use of these engines with other products, refer to any owner’s or service manuals pertaining to said products. TABLE OF CONTENTS RULES FOR SAFE OPERATION DIMENSIONS AND FEATURES 4-CYCLE ENGINE THEORY SECTION 1: GENERAL INFORMATION SECTION 2: IGNITION SECTION 3: CARBURETION SECTION 4: GOVERNOR CONTROLS AND GOVERNOR SECTION 5: CYLINDER HEAD AND VALVES SECTION 6: ELECTRIC STARTER SECTION 7: ALTERNATORS SECTION 8: LUBRICATION SYSTEM SECTION 9: ENGINE DISASSEMBLY SECTION 10: CYLINDER AND CRANKCASE COVER SECTION 11: CRANKSHAFT AND CAMSHAFT SECTION 12: PISTON, RINGS AND CONNECTING ROD INSPECTION AND ASSEMBLY SECTION 13: ENGINE ASSEMBLY SECTION 14: SPECIFICATIONS A WORD ABOUT SPECIAL TOOLS Many of the procedures depicted in this manual require the use of special tools. Some of the tools required are available as Generac parts and are listed as such in this manual. ATTENTION! Generac Power Systems does not approve or authorize the use of these engines on All Terrain Vehicles (ATV’s), go-carts, motorbikes, aircraft products, personal watercraft, or vehicles intended for use in competitive events. Use of these engines in such applications could result in property damage, serious injury (including paralysis), or even death. RULES FOR SAFE OPERATION If you do not understand any portion of this manual, contact Generac or your nearest Generac Authorized Service Dealer for starting, operating and servicing procedures. Throughout this publication and on tags and decals affixed to the eng

FAQs

Who is the Generac service manual intended for?

It is written to aid dealers’ mechanics, company service personnel, and general consumers when servicing the described products.

What do the DANGER, WARNING, CAUTION, and NOTE blocks mean?

DANGER and WARNING indicate instructions that can result in personal injury if not strictly complied with; CAUTION covers instructions to prevent damage to equipment and/or property; NOTE provides explanatory statements requiring special emphasis.

What safety guidance should be followed before operating or servicing the equipment?

Study the rules for safe operation, follow the special instruction blocks carefully, observe DANGER/WARNING/CAUTION/NOTE during service, and use common sense to prevent accidents.

Nov 4, 2026

Uploaded by Rizky