1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 307Get this manual

1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 307

THERMAL EXPANSION RELIEF 1Under certain conditions, external temperature variations can cause the unit's hydraulic fluid
to expand2The extreme pressure caused by thermal expansion flows from the cylinder and bypasses the UP check valve and the