1997 Johnson/Evinrude EU 25, 35 HP 3-Cylinder outboards Service Manual, Page 87Get this manual
Installation
1Install new O-ring onto the valve core housingApply OMC Locquic Primer and OMC Screw Lock to the unthreaded end of the housing
2Thread the valve repair tool half of the way onto the end of the valve core housing
INotel Do not thread the valve repair tool more than half of the way onto the valve core housingYou will not be able to remove the tool from the housing after installation