1990 Johnson Evinrude "ES" 9.9 thru 30 Service Repair Manual, P/N 507871, Page 169Get this manual
Quality of the image is intentionally reduced!
41l 9 Measure the piston diameter in at least two places to
2.99656 in76,11 0.0060.001 in0,150,03
2.99690 in76,12 0.0020.0005 in0,050,01
Identification
Zol