1983 Johnson/Evinrude 2 thru V-6 outboards Service Repair Manual P/N 393765, Page 31Get this manual
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Fuel System
Powerhead Piston Ring Gap 0,640,38 mm (0.025"0.015") Piston Ring Groove 0,100,05 mm (0 .0040"0.0020"Cylinder and Piston 0,1400,109 mm (0.0055"0.0043") Connecting RodPiston End 0,0280