1985 Johnson/Evinrude 2 thru V-6 models service repair manual final edition P/N 507508, Page 590Get this manual
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Pinion Shimm ng Using Special PN 315767 321520V4 and V6 '
use Special Tool PN 321520
3 Select approximately 0,508 (0.020") of driveshaft shimsClean the shims in solvent and dry thor