1997 Johnson/Evinrude EU 25, 35 HP 3-Cylinder outboards Service Manual, Page 284Get this manual
15Remove the manual release valve filter and inspect
16Remove the filter valve plugRemove the filter valve components from the manifold17Inspect the components ofthe filter valve-plugballseatand filter CDDiscard the O-rings from the plug and seat18Remove the fill plugDiscard the O-ring20842