background image

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 engine, 

DANGER, WARNING 

and 

CAUTION 

blocks

are used to alert you to special instruction about a particular
operation that may be hazardous if performed incorrectly or
carelessly. Observe them carefully. 
These safety warnings cannot eliminate the hazards that they
indicate. Strict compliance with the special instructions while
performing the service plus “common sense” are major
measures to prevent accidents. 
The following definitions apply to 

DANGER, WARNING,

CAUTION 

and 

NOTE

blocks found throughout the manual.

These safety symbols indicate the following:

DANGER: 

After this heading you can read handling,

installing, operating or servicing instructions that, if not
strictly complied with, will result in personal injury.

WARNING:  

After this heading you can read

handling, installing, operating or servicing instructions
that, if not strictly complied with, may result in personal
injury.

CAUTION:

After this heading you can read

instructions for handling, installing, operating or
servicing the engine that, if not strictly complied with,
may result in damage to equipment and/or property.

NOTE:

After this heading you can read explanatory

statements that require special emphasis.
These symbols indicate the following:

Points out important safety information that, if not
followed, could endanger personal safety and/or
property of yourself and others.

Potential explosion hazard.

Potential fire hazard.

Potential electrical shock hazard.

RULES FOR SAFE OPERATION

Study these 

RULES FOR SAFE OPERATION

carefully

before operating or servicing this equipment. Become familiar
with the 

OWNER’S MANUAL

and with the engine. The

engine can operate safely, efficiently and reliably only if it is
properly operated and maintained. Many accidents are caused
by failing to follow simple and fundamental rules or precautions.

Generac cannot possibly anticipate every possible circumstance
that might involve a hazard. The warnings in this manual and on
tags and decals affixed to the equipment, are therefore, not all-
inclusive. If you use a procedure, work method or operating
technique Generac does not specifically recommend, you must
satisfy yourself that it is safe for you and others. You must also
make sure the procedure, work method or operating technique
that you choose does not render the engine to be unsafe.

DANGER: 

Do not tamper with the engine governed

speed. High operating speeds are dangerous and
increase the risk of personal injury or damage to the
equipment. Operating at low speeds with heavy load may
shorten the engine’s life.

BEFORE OPERATING

• Gasoline is highly 

FLAMMABLE

and its vapors are

EXPLOSIVE

. Do not permit smoking, open flames,

sparks or heat in the area while handling gasoline. Avoid
spilling gasoline on a hot engine. Comply with all of the 
laws regulating storage and handling of gasoline.

• Store gasoline and other fuels only in containers

designed and approved for the storage of such
materials.

• Add gasoline in a clean, well-ventilated area. Wipe up

any spilled gasoline immediately. 
If gasoline has been spilled, let it dry completely before
starting the engine.

The engine exhaust from this product contains

chemicals known to the State of California to cause

cancer, birth defects, or other reproductive harm.

WARNING:

4

GTV/GTH - 990/760 OHVI SERIES ENGINES

Summary of Contents for GTH-760 Series

Page 1: ...Owner s Manual SAFETY ASSEMBLY OPERATION TROUBLESHOOTING PARTS WARRANTY GTV GTH 990 760 AUTHORIZED DEALER SUPPORT SERIES ENGINES 1 800 333 1322...

Page 2: ...lations To ensure that your engine continues to meet these regulations refer to the following information and instructions in this owner s manual 2 TABLE OF CONTENTS GENERAL INFORMATION Service Inform...

Page 3: ...upervised by personnel knowledgeable of batteries and the required precautions Keep unauthorized personal away from batteries Use only 12 volt negative ground batteries with a minimum rating of 675 co...

Page 4: ...hock hazard RULES FOR SAFE OPERATION Study these RULES FOR SAFE OPERATION carefully before operating or servicing this equipment Become familiar with the OWNER S MANUAL and with the engine The engine...

Page 5: ...ury including paralysis or even death Engine exhaust gases contain DEADLY carbon monoxide gas This dangerous gas if breathed in sufficient concentrations can cause unconsciousness or even death Operat...

Page 6: ...synthetic 5W 20 or 5W 30 Check your engine oil level frequently to avoid possible damage from running low on oil Place engine on a level surface Clean area around oil fill and remove oil fill cap and...

Page 7: ...needs 10 seconds to reset NOTE If you restart engine after a shutdown and have not corrected the low oil pressure the engine will run for about 10 seconds as described above and then it will stop OPE...

Page 8: ...of a new filter with engine oil Turn the new filter clockwise until the gasket contacts the filter adapter then tighten an additional 3 4 turn 4 Remove the oil fill cap and insert a clean funnel into...

Page 9: ...Re install air cleaner cover OPTION 2 1 Remove air cleaner cover 2 Empty dust out of cover 3 Gently pull filter out of air cleaner housing 4 Clean inside of housing with damp cloth 5 Push new air clea...

Page 10: ...or of your engine is pre set at the factory The carburetor should not be tampered with because this will VOID THE EMISSION CONTROL SYSTEM WARRANTY If you experience problems and your engine is used at...

Page 11: ...e gasohol drain the fuel tank then run the engine until it stops from lack of fuel WARNING Drain the fuel into approved container outdoors away from open flame Be sure the engine is cool NOTE Using a...

Page 12: ...line 1 Fill fuel tank during operation 2 Low oil level 2 Fill crankcase to proper level 3 Fault in engine 3 Contact Authorized Service Facility Engine lacks power 1 Dirty air filter 1 Replace air filt...

Page 13: ...13 GTV GTH 990 760 OHVI SERIES ENGINES...

Page 14: ...14 GTV GTH 990 760 OHVI SERIES ENGINES...

Page 15: ...approved modifications or the use of counterfeit and or grey market parts not made supplied or approved by Generac You are responsible for presenting your engine to a Generac Authorized Warranty Servi...

Page 16: ...CS Warranty shall be warranted for the remainder of the ECS Warranty Period prior to the first scheduled replacement point for such emissions related part 4 Repair or replacement of any warranted emis...

Page 17: ...installation As with all mechanical devices the GT Series engines need periodic part s service and replacement to perform well This warranty will not cover repair when normal use has exhausted the li...

Page 18: ...hours _____ Maintenance performed ______________________ Date __ __ __ Engine hours _____ Maintenance performed ______________________ Date __ __ __ Engine hours _____ Maintenance performed __________...

Page 19: ...hours _____ Maintenance performed ______________________ Date __ __ __ Engine hours _____ Maintenance performed ______________________ Date __ __ __ Engine hours _____ Maintenance performed __________...

Page 20: ...GENERAC POWER SYSTEMS INC P O Box 297 Whitewater WI 53190 Part No 0D8699 REV C PRINTED IN THE USA 3 04...

Reviews: