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GENERAL MAINTENANCE
RECOMMENDATIONS

CHECKING THE OIL LEVEL

See the 

BEFORE STARTING THE ENGINE

section on

page 6 for information on checking the oil level. The oil level
should be checked before each use, or at least 

every eight

(8) hours

of operation. Keep the oil level maintained.

CHANGING THE OIL AND OIL FILTER

Your engine is equipped with an oil filter. Change the oil and
filter after the 

first eight (8) hours

of operation. Change

the oil and oil filter 

every 100 hours

thereafter. If you are

using this engine under dirty or dusty conditions, or in
extremely hot weather, change the oil more often.
Use the following instructions to change the oil while the engine
is still warm:
1. Clean the area around the oil drain plug, remove the plug

and drain the oil completely into a suitable container
(Figure 1 or figure 3).

2. When the oil is drained, install and tighten the oil drain plug.
3.

When changing the oil filter, use the
following instructions:

A) Locate filter (Figure 4 or figure 5).
B) Place a suitable container beneath the oil filter and turn
the filter 

counterclockwise

to remove the filter.

C) Coat the gasket 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 the oil

fill opening. Fill the crankcase with the recommended oil
until the oil level is at the full point on the dipstick.
Approximately 2366ml (2.5 qt.) are required when changing
an oil filter. 

POUR SLOWLY

.

5. When the crankcase is filled to the proper level, install and

tighten the oil fill cap. Start engine to fill oil filter,
recheck/correct oil level.

CLEANING INTAKE SCREEN

Clean intake screen and oil cooler fins after each use or as
needed.

SERVICING THE AIR CLEANER

Your 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 with a dirty air cleaner system.

Service or replace the paper air filter per schedule on page 7.
Service or replace the filter more often if the engine is operated
under dusty or dirty conditions. Clean the foam pre-filter (if
equipped) 

every 25 hours of operation

, or sooner

under dusty or dirty conditions.

Figure 3 & 4 - Drain Plug and Oil Filter

DRAIN 

Figure 6 - Clean Intake Screen & Oil Cooler Fins

INTAKE SCREEN

8

Figure 5 - Oil Filter

FILTER 

OIL

COOLER

FINS

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...

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