1995 Johnson Evinrude "EO" 90 CV 85 thru 115 Service Manual, P/N 503150, Page 144Get this manual

1995 Johnson Evinrude "EO" 90 CV 85 thru 115 Service Manual, P/N 503150, Page 144

44 1441 10Use micrometer to check piston conditionMake at least two measurements, 90 from each otherMeasure the piston diameter
on the lower, square ringsInstall each square ring on its pistonWith the ring seated in its groove, make several checks around
the piston The side clearance must not exceed 0.004 in(0,10 mm) 1471 13Use machinist's straightedge to check clearance on
the upper Pressure-Back ringsInstall each Pressure-Back ring on its pistonWhen checked with the straightedge, there should
be enough ring clearance to allow the straightedge to touch the piston on both sides of the ring grooveMake several checks
around the piston If straightedge does not touch piston, remove the ring and clean ring grooveAssembly r:=J Proceed slowlyMake