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3
Number of cylinders
Type
Horsepower
Torque (foot-pounds)
Compression ratio
Bore
Stroke
Piston displacement
Oil tank capacity with filter
ITEM
VALVE
Fit in
Exhaust
guide
Intake
Seat width
Stem protrusion from
cylinder valve pocket
OUTER VALVE SPRING
Free length
Intake
1.751-1.848 in.
(closed)
1.286-1.383 in.
(open)
Exhaust
1.751-1.848 in.
(closed)
1.332-1.429 in.
(open)
INNER VALVE SPRING
Free length
Intake
1.577-1.683 in.
(closed)
1.112-1.218 in.
(open)
Exhaust
1.577-1.683 in.
(closed)
1.158-1.264 in.
(open)
SPECIFICATIONS
GENERAL
2
4-cycle, 45 V Twin
91 @ 5800 RPM
87 @ 5200 RPM
10.0 to 1
3.500 in.
3.812 in.
3
73.4 in.
2.1 quarts
NEW COMPONENTS
0.0015-0.0033 in.
0.008-0.0026 in.
0.040-0.062 in.
1.975-2.011 in.
2.105-2.177 in.
72-92 lbs
183-207 lbs
72-92 lbs
171-195 lbs
1.926-1.996 in.
38-49 lbs
98-112 lbs
38-49 lbs
91-106 lbs
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ENGINE IGNITION SPECIFICATIONS
Timing during engine
cranking
Timing with engine at
RPM listed below and
V.O.E.S. connected
Regular idle
88.9 mm
96.82 mm
Fast idle (all models)
1203 cc
Spark plug gap
1.90 liters
0.038-0.084 mm
0.020-0.066 mm
1.02-1.57 mm
50.17-51.08 mm
53.47-55.30 mm
32.6-41.7 kg
82.9-93.8 kg
32.6-41.7 kg
77.5-88.3 kg
48.92-50.70 mm
17.2-22.2 kg
44.4-50.7 kg
17.2-22.2 kg
41.2-48.0 kg
5 BTDC
20 BTDC
950-1050
1150-1250
RPM
(49 State)
2000 RPM
0.038-0.045 in.
0.96-1.14 mm
SERVICE WEAR LIMITS
0.0040 in.
0.102 mm
0.0035 in.
0.089 mm
0.090 in.
2.29 mm
2.031 in.
51.59 mm
2.105 in. (min)
53.47 mm (min)
1.926 in. (min)
48.92 mm (min)
RPM
(Calif.)
3-1
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