Generac Power Systems GTH1000, Service Manual

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SECTION 14: SPECIFICATIONS
GENERAL SPECIFICATIONS
MODEL GTH & GTV 760 GTH & GTV 990 GTH & GTV 1000
Bore 90 mm (3.54”) 90.00 mm (3.54”) 90.00 mm (3.54”)
Stroke 60 mm (2.36”) 78 mm (3.07”) 78.58 mm (3.09”)
Displacement 763cc 992cc 999cc
OIL CAPACITY GTV 760/990/1000 GTH 760/990/1000
With Oil Filter* 2.3L (2.4 qt) 2.2L (2.3 qt)
Without Oil Filter* 2.0L (2.1 qt) 1.9L (2.0 qt)
TORQUE SPECIFICATIONS
Alternator (to crankcase) Screws 4.75 Nm (40 in. lbs.)
Ignition Coil Screws 4.75 Nm (40 in. lbs.)
Carburetor Adaptor Mounting Bolts 5.4 Nm (48 in. lbs.)
Connecting Rod Bolts 24.4 Nm (216 in. lbs.)
Crankcase Cover Bolts 47.5 Nm (35 ft. lbs.)
Cylinder Head Bolts 29.9 Nm (22 ft. lbs.)
Exhaust Manifold Bolts 19 Nm (168 in. lbs.)
Flywheel Nut 214 Nm (150 ft. lbs.)
Flywheel Fan Retainer Bolts 21.7 Nm (182 in. lbs.)
Governor Lever (clinching screw) 11.3 Nm (100 in. lbs.)
Intake Manifold Screws 19 Nm (168 in. lbs.)
Oil Pump Cover 12.2 Nm (108 in. lbs.)
Rocker Arm Jam Nut 19 Nm (168 in. lbs.)
Spark Plug 19 Nm (168 in. lbs.)
Starter Motor Bolts 27 Nm (228 in. lbs.)
Rocker Cover Screws 6.8 Nm (60 in. lbs.)
Blower Housing Screws 4.75 Nm (40 in. lbs.)
COMMON SPECIFICATIONS
Ignition Coil Air Gap .008” – .012” (0.20 – 0.30 mm)
Crankshaft End Play .002” – .015” (0.05 – 0.40 mm)
Spark Plug Gap .040” (1.01 mm)
Valve Clearance (Cold)
– Intake .002” – .004” (0.05 – 0.10 mm)
– Exhaust .002” – .004” (0.05 – 0.10 mm)
Normal Compression
– GTH/GTV-760 130-160 psi
– GTH/GTV-990/1000 160-190 psi
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* To prevent over filling of the crankcase, add approximately 3/4 of the total volume when refilling and then add as needed to bring the level up to
the full mark.