1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Repair Manual P/N 520203, Page 176Get this manual
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0.307 in 0.002 (7,8 mm 0,05)
' 0.307 in 0.0020.016 in(0,4 mm)
(7,8 mm 0,05)-
GAUGE 0.846 inI (21 ,500 mm)
6 Inspect valve seats for contamination, e