1999 "EE" Evinrude 70HP 4-Stroke Service Repair Manual, P/N 787023, Page 18Get this manual
Quality of the image is intentionally reduced!
Specifications Operation
1.4811.488 in(37,6337,79 mm) 1.477 in(37,53 mm) Intake0.005 in(0,13 mm) Exhaust0.006 in(0,15 mm)
To bore oversize, add piston oversize dimension to s