Tecumseh HH100 Handbook page 69

Model
Displacement
Stroke
Bore
Timing Dimension
Point Gap
Spark Plug Gap
Valve Clearance
Valve Seat Angle
Valve Seat Width
Valve Face Angle
Valve Face Width
Valve Lip Width
Valve Spring Free Length
Valve Guides STD Diameter
Valve Guides Over-Size Dimensions
Dia. Crankshaft Conn. Rod Journal
Maximum Conn. Rod Dia.Crank Bearing Maximum
Shaft Seat Dia. for Roller Bearings
Crankshaft End Play
Piston Diameter
NOTE: All dimensions are in inches and millimeters unless noted.
HH80
U.S.
23.7
2-3/4''
3.3120
3.3130
TDC-Start
.095 Run
.020
.028
.033
Intake .010
Exhaust .020
46°
.042
.052
45°
.089
.099
.06
1.885
.312
.313
.343
.344
1.3750
1.3755
1.3765
1.1865
1.1870
None
3.3080
3.3100
HH100
Metric U.S.
384.4cc 23.7
69.85mm 2-3/4''
84.125 3.3120
84.150 3.3130
TDC-Start
2.41 .095 Run
.508 .020
.711 .028
.838 .033
.254 .010
.508 .020
46°
.042 .042
.052 .052
45° 45°
2.261 .089
2.515 .099
1.524 .06
47.879 1.885
7.925 .312
7.950 .313
8.712 .343
8.738 .344
34.925 1.3750
34.938 1.3755
Maximum
34.963 1.3765
30.137 1.1865
30.150 1.1870
None
84.023 3.3080
84.074 3.3100
HH120
Metric U.S. Metric
284.4cc 27.66 453.4 cc
69.85mm 2-7/8'' 73.025mm
84.125 3.500 88.900mm
84.150 3.501 88.925mm
TDC-Start
2.41 .095 Run
.508 .020
.711 .028
.838 .033
.254 .010
.508 .020
46°
1.067 .042
1.321 .052
45° 45° 45°
2.261 .089
2.515 .099
1.524 .06
47.879 1.885 47.879
7.925 .312
7.950 .313
8.712 .343
8.738 .344
34.925 1.3750 34.925
34.938 1.3755 34.938
Maximum
34.963 1.3765 34.963
30.137 1.1865 30.137
30.150 1.1870 30.150
None
84.023 3.4950 88.773
84.074 3.4970 88.824
2.41mm
.508
.711mm
.838mm
.254mm
.508mm
1.067mm
1.321mm
2.261
2.515
1.524
7.925
7.950
8.712
8.738
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