Generac Power Systems GN190H, Service And Repair Manual

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SPECIFICATIONS
54
GENER
A
C
MODEL GN-190 GN-191 GN-220
VALVE SEAT WIDTH:
DESIGN WIDTH
0.034-0.044 inch (0.87-1.13mm)
VALVE SEAT ANGLE 45 degrees
VALVE MARGIN:
DESIGN MARGIN
0.058-0.060 inch 0.034-0.044 inch 0.034-0.044 inch
(1.48-1.52mm) (0.87-1.13mm) (0.87-1.13mm)
INTAKE VALVE STEM
DIAMETER:
DESIGN DIAMETER
0.215-0.216 inch 0.274-0.275 inch 0.274-0.275 inch
(5.465-5.480mm) (6.965-6.980mm) (6.965-6.980mm)
EXHAUST VALVE STEM
DIAMETER:
DESIGN DIAMETER
0.214-0.215 inch 0.273-0.274 inch 0.273-0.274 inch
(5.445-5.460mm) (6.965-6.980mm) 6.965-6.980mm)
TAPPET DIAMETER
INTAKE AND EXHAUST:
DESIGN DIAMETER
0.294-0.295 inch 0.293-0.294 inch 0.293-0.294 inch
(7.461-7.475mm) (7.457-7.475mm) (7.457-7.475mm)
VALVE SPRINGS:
FREE LENGTH
1.910 inch (48.48mm) 2.074 inch (52.69mm) 2.074 inch (52.69mm)
FORCE REQUIRED TO
COMPRESS SPRING
TO 1.39 INCH (35.2mm)
14.8-16.3 pounds 19.8-21.8 pounds 19.8-21.8 pounds
(6.7-7.4kg) (9.0-9.9kg) (9.0-9.9kg)
VALVE CLEARANCE:
INTAKE
0.001-0.003 inch 0.001-0.0022 inch 0.001-0.0022 inch
(0.03-0.07mm) (0.03O.056mm) (0.03O.056mm)
EXHAUST 0.001-0.003 inch 0.0018-0.003 inch 0.0018-0.003 in.
(0.03-0.07mm) (0.07-0.046mm) (0.07-0.046mm)
VALVE GUIDES:
DESIGN DIAMETER
0.216-0.217 inch 0.237-0.2364 inch 0.237-0.2364 inch
(5.505-5.520mm) (6.02-6.005mm) (6.02-6.005mm)
CRANKSHAFT END PLAY
VALVE TRAIN
GENERAL SPECIFICATIONS
MODEL GN-190 GN-191 GN-220
BORE 2.76 inches (70mm) 2.76 inches (70mm) 2.95 inches (75mm)
STROKE 1.93 inches (49mm) 1.93 inches (49mm) 1.93 inches (49mm)
DISPLACEMENT 188.6cc 188.6cc 216.5cc
OIL CAPACITY
W/O FILTER CHANGE
21 ounces (620ml) 21 ounces (620ml) 21 ounces (620ml)
WITH FILTER CHANGE 29.5 ounces (870 ml) 29.5 ounces (870 ml) 29.5 ounces (870 ml)
ALLOWABLE
END PLAY
0.006-0.023 inch 0.006-0.023 inch 0.006-0.023 inch
(0.14-0.60mm) (0.14-0.60mm) (0.14-0.60mm)