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Warranty

U.S. EPA EXHAUST EMISSION CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The United States Environmental Protection Agency (EPA) and Generac Power Systems, Inc. (Generac) are pleased to explain the Exhaust Emission 
Control System Warranty (ECS Warranty) on your new 2011 and later equipment. New equipment that use small spark-ignited engines must be designed, 
built, and equipped to meet stringent anti-smog standards for the federal government. Generac will warrant the emission control system on your equip-
ment for the period of time listed below provided there has been no abuse, neglect, unapproved modification or improper maintenance of your equipment.
The emission control system on this equipment includes all components whose failure would increase the exhaust emissions of any regulated pollutant. 
These components are listed in the Emissions Information section of this manual.

MANUFACTURER’S WARRANTY COVERAGE:

This ECS Warranty is valid for two years, or for the same period as specified in the Product Warranty if applicable, whichever is longer. For equipment 
with hour meters, the warranty period is a number of hours equal to half the Useful Life to which the equipment is certified, or the warranty period speci-
fied above in years, whichever is less. The Useful Life can be found on the Emission Control Label on the engine. If, during such warranty period, any 
emission-related part on your equipment is found to be defective in materials or workmanship, repairs or replacement will be performed by a Generac 
Authorized Warranty Service Dealer.

OWNER'S WARRANTY RESPONSIBILITIES:

As the equipment owner, you are responsible for the completion of all required maintenance as listed in your factory supplied Owner's Manual. For war-
ranty purposes, Generac recommends that you retain all receipts covering maintenance on your equipment, but Generac cannot deny warranty solely due 
to the lack of receipts.
You should be aware that Generac may deny any and/or all warranty coverage or responsibility if your equipment, or a part/component thereof, has failed 
due to abuse, neglect, improper maintenance, or unapproved modifications.

You are responsible for contacting a Generac Authorized Warranty Dealer as soon as a problem occurs. The warranty repairs should be completed 
in a reasonable amount of time, not to exceed 30 days.

Warranty service can be arranged by contacting either your selling dealer or a Generac Authorized Warranty Service Dealer. To locate the Generac 
Authorized Warranty Service Dealer nearest you, call our toll free number below, or email [email protected].

1-800-333-1322

IMPORTANT NOTE:

 This warranty statement explains your rights and obligations under the Exhaust Emission Control System Warranty, which is provided 

to you by Generac pursuant to federal law. Note that this warranty shall not apply to any incidental, consequential or indirect damages caused by defects 
in materials or workmanship or any delay in repair or replacement of the defective part(s). This warranty is in place of all other warranties, expressed or 
implied. Specifically, Generac makes no other warranties as to the merchantability or fitness for a particular purpose. Any implied warranties which are 
allowed by law, shall be limited in duration to the terms of the express warranty provided herein. Some states do not allow limitations on how long an 
implied warranty lasts, so the above limitation may not apply to you.

The ECS Warranty applies only to the exhaust emission control system of your new equipment. Both the ECS Warranty and the Product Warranty 
describe important rights and obligations with respect to your new engine.

Warranty service can be performed only by a Generac Authorized Warranty Service Facility. When requesting warranty service, evidence must be pre-
sented showing the date of the sale to the original purchaser/owner.

Part 1

Part No. 0J3335C 

 Rev. A  09/11

Summary of Contents for GTH - 990

Page 1: ...Owner s Manual GTH 990 33 HP www generac com SAVE this Manual Provide this manual to any operator of the engine...

Page 2: ...Pressure System 5 Winter Summer Intake Air Control If So Equipped 5 Maintenance 5 General Maintenance Recommendations 5 Perfoming Scheduled Maintenance 5 Checking the Oil Level 5 Changing the Oil and...

Page 3: ...h 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...

Page 4: ...e is running Never work on this engine or handle any electrical device while standing in water while barefoot or while hands or feet are wet DANGEROUS ELECTRIC SHOCK will result Allow muffler engine c...

Page 5: ...st eight 8 hours of operation Thereafter change oil and filter every 100 hours of operation Change oil more often if engine is operated in dirty or dusty condi tions or if engine is operated under hea...

Page 6: ...ice Proper maintenance and care of the engine assures a minimum number of problems and keeps operating expenses at a minimum See an authorized dealer distributor for service aids and acces sories BEFO...

Page 7: ...d or the crankcase breather system To eliminate this problem this engine may be fitted with a winter summer valve Figure 4 This directs hot air into the carburetor during cold weather operation Always...

Page 8: ...ake Screen Oil Cooler Fins SERVICING THE AIR CLEANER The equipment s air cleaner system is one of the most important items to maintain The engine will not run properly and may be damaged if it is run...

Page 9: ...st have a spark arrestor The spark arrestor must be maintained in good condition by the owner operator Clean and inspect the spark arrestor screen as follows Inspect the screen and replace if it is to...

Page 10: ...The piston is at TDC when it is at its highest point of travel Loosen the rocker jam nut Figure 11 Use a 10mm allen wrench to turn the pivot ball stud while checking clearance between the rocker arm...

Page 11: ...about five 5 minutes to warm it NOTE Alcohol blended fuel or gasohol attracts moisture which can lead to the separation and formation of acids during storage This acidic gas can damage internal engin...

Page 12: ...ve stuck open or closed 11 Engine has lost compression 1 Clean or replace air cleaner 2 Fill fuel tank 3 Drain fuel tank and carburetor fill with fresh fuel 4 Connect wire to spark plug 5 Replace spar...

Page 13: ...11 Notes...

Page 14: ...r equipment but Generac cannot deny warranty solely due to the lack of receipts You should be aware that Generac may deny any and or all warranty coverage or responsibility if your equipment or a part...

Page 15: ...replacement as required maintenance in the Owner s Manual shall be warranted for the period of time prior to first scheduled replacement point for that part If the part fails prior to the first schedu...

Page 16: ...placement to perform well This warranty will not cover repair when normal use has exhausted the life of a part s or engine Failures caused by any external cause or act of God such as collision theft v...

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