Generac Power Systems GTH - 990 Owner'S Manual Download | Manualshive

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Owner’s Manual

GTH - 990, 33 HP

www.generac.com

SAVE this Manual. Provide this manual
to any operator of the engine.

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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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