1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 323Get this manual
1251 24Remove five impact relief valve balls12 125Remove up relief valve
Remove the valve housing and washer from the rodDiscard the internal O-ring
28 27Remove and discard the quad ring and two backup rings29 128Slide the end cap off the rodDiscard the scraper301 29Remove the end cap rod backup ring and internal tilt rod
end cap seal30Clean the manifold thoroughly in fresh solventBlow excess solvent from the internal passages with compressed airIt is essential that the manifold and all components be kept absolutely clean and dust freeAny dirt in the system could cause scoring of cylinder bores, sticking valves, or damage to pump components18959