Tecumseh AH520 - Page 63

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TABLE OF SPECIFICATIONS
Reference Column 38 39 40 41 42
U.S. Metric U.S. Metric U.S. Metric U.S. Metric U.S. Metric
mm mm mm mm mm
Bore 2.093 53.162 2.093 53.162 2.093 53.162 2.093 53.162 2.093 53.162
2.094 53.188 2.094 53.188 2.094 53.188 2.094 53.188 2.094 53.188
Stroke 1.828 46.431 1.500 38.1 1.828 46.431 1.746 44.348 1.500 38.1
Cu. In. Displacement 6.0 98.3 5.20 85.2 6.0 98.3 6.0 98.3 5.20 85.2
(in
3
) (cc)
Point Gap * .020 .508 .020 .508 * .020 .508
Timing Ext. Ext. .088 2.235 .070 1.778 Ext. Ext. Ext. Ext.
B.T.D.C. Ignition Ignition Ignition Ignition Ignition Ignition
Spark Plug Gap .030 .762 .030 .762 .030 .762 .030 .762 .030 .762
Piston Ring .006 .152 .006 .152 .006 .152 .006 .152 .006 .152
End Gap .016 .406 .016 .406 .016 .406 .016 .406 .016 .406
Piston 2.0880 53.035 2.0880 53.035 2.0880 53.035 2.0880 53.035 2.0880 53.035
Diameter 2.0885 53.049 2.0885 53.049 2.0885 53.049 2.0885 53.049 2.0885 53.049
(Top) .0655 1.664 .0655 1.664 .0655 1.664 .0655 1.664 .0655 1.664
.0665 1.689 .0665 1.689 .0665 1.689 .0665 1.689 .0665 1.689
.0645 1.638 .0645 1.638 .0645 1.638 .0645 1.638 .0645 1.638
(Bot.) .0655 1.664 .0655 1.664 .0655 1.664 .0655 1.664 .0655 1.664
Piston Ring .0615 1.562 .0615 1.562 .0615 1.562 .0615 1.562 .0615 1.562
Width .0625 1.587 .0625 1.587 .0625 1.587 .0625 1.587 .0625 1.587
Piston Pin .4997 12.692 .4997 12.692 .4997 12.692 .4997 12.692 .4997 12.692
Diameter .4999 12.697 .4999 12.697 .4999 12.697 .4999 12.697 .4999 12.697
Crank Pin Journal .8113 20.607 .8113 20.607 .8445 21.450 .8113 20.607 .8113 20.607
Diameter .8118 20.620 .8118 20.620 .8450 21.463 .8118 20.620 .8118 20.620
Crankshaft .9998 25.395 .9998 25.395 .9998 25.395 .9998 25.395 .7498 19.045
P.T.O. Side 1.0003 25.408 1.0003 25.408 1.0003 25.408 1.0003 25.408 .7503 19.058
Main Brg. Dia.
Crankshaft .7498 19.045 .6695 17.005 .6695 17.005 .6695 17.005 .6695 17.005
Magneto Side .7503 19.058 .6699 17.015 .6699 17.015 .6699 17.015 .6699 17.015
Main Brg. Dia.
Crankshaft None None None None None None None None None None
End Play
* Does not apply to units with Solid State Ignition.
Piston Ring
Groove Width