1995 Johnson/Evinrude Outboards 125-300 90 degree LV Service Manual, Page 208Get this manual

1995 Johnson/Evinrude Outboards 125-300 90 degree LV Service Manual, Page 208

10Use micrometer to check piston conditionMake at least two measurements, 90 from each otherMeasure the piston diameter 1f4
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) 13Use machinist's straightedge to check clearance on tapered
piston ringThe upper ring is tapered on V8 models; both rings are tapered on V4 and V6 modelsWhen 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 the ring groove 14V6Remove