Tecumseh AH520 - Page 58

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TABLE OF SPECIFICATIONS
Reference Column 13 14 15 16 17
U.S. Metric U.S. Metric U.S. Metric U.S. Metric U.S. Metric
mm mm mm mm mm
Bore 2.375 60.33 2.093 53.162 2.4375 61.913 2.093 53.162 2.093 53.162
2.376 60.35 2.094 53.188 2.4385 61.938 2.094 53.188 2.094 53.188
Stroke 1.680 42.672 1.500 38.1 1.750 44.45 1.500 38.1 1.500 38.1
Cu. In. Displacement 7.50 122.9 5.20 85.2 8.17 133.9 5.20 85.2 5.20 85.2
(in
3
) (cc)
Point Gap .020 .508 .018 .457 .018 .457 .017 .432 .017 .432
Timing .095 2.413 .100 2.54 .100 2.54 .110 2.794 .110 2.794
B.T.D.C.
Spark Plug Gap .030 .762 .030 .762 .030 .762 .030 .762 .030 .762
Piston Ring .005 .127 .006 .152 .007 .178 .006 .152 .006 .152
End Gap .013 .330 .014 .356 .017 .432 .016 .406 .016 .406
Piston 2.3685 60.16 2.0870 53.01 2.4302 61.727 2.0875 53.023 2.0880 53.035
Diameter 2.3695 60.185 2.0880 53.035 2.4312 61.753 2.0885 53.048 2.0890 53.061
(Top) .0655 1.664 .0975 1.664 .0655 1.664 .0645 1.638 .0645 1.638
.0665 1.664 .0985 1.689 .0665 1.664 .0655 1.664 .0655 1.664
.0645 1.638 .0955 2.426 .0645 1.638 .0645 1.638 .0645 1.638
(Bot.) .0655 1.664 .0965 2.451 .0655 1.664 .0655 1.664 .0655 1.664
Piston Ring .0615 1.562 .0615 1.562 .0625 1.587 .0615 1.562 .0615 1.562
Width .0625 1.587 .0935 2.375 .0925 2.35 .0625 1.587 .0625 1.587
Piston Pin .4997 12.692 .3750 9.525 .4997 12.692 .3750 9.525 .4997 12.692
Diameter .4999 12.697 .3751 9.528 .4999 12.698 .3751 9.528 .4999 12.697
Crank Pin Journal .6259 15.898 .6957 17.671 .6259 15.898 .6857 17.417 .6857 17.417
Diameter .6266 15.916 .6865 17.427 .6266 15.916 .6868 17.445 .6865 17.445
Crankshaft .8650 21.971 .8745 22.12 .6691 16.995 .6691 16.995 .9998 25.349
P.T.O. Side .8850 22.479 .8750 22.225 .6695 17.001 .6695 17.001 1.0003 25.408
Main Brg. Dia.
Crankshaft .7495 19.037 .7495 19.037 .7495 19.037 .7495 19.037 .7495 19.037
Magneto Side .7503 19.058 .7500 19.058 .7500 19.058 .7500 19.058 .7500 19.058
Main Brg. Dia.
Crankshaft None None .003 .076 None None None None None None
End Play .016 .406
Piston Ring
Groove Width