1975 Johnson 4HP 4R75, 4W75 Outboards Service Manual, Page 19Get this manual
varnish and gum, and the leaves must be perfectly flat and without distortion so that they form perfect seal with the leaf plate baseSee Figure 3-9bDO NOT attempt to bend or repair damaged leaf; replace the complete assembly if damagedDO NOT under any Circumstances bend or flex the leaves by handcReplace the leaf stop if any leaves are brokenif necessary by bending leaf stopGOOD WORN 1294
dClearance under leaf stop should be 14"; adjust See Figure 3-9ALIG NME MARKS
Figure 3-7Inlet Needle Valve Seat Wear NEEDLE VALVES aInspect the tapered end of the needle valves for grooves, nicks, or scratches; replace if necessarySee Figure 3-8bDO NOT attempt to alter the shape of the needle valvesLEAF VALV LEAF STOP
LEAF VALVES aInspect the leaf valve assembly and disassemble if necessaryThe leaf valves must be free from all
Figure 3-9Leaf Plate Assembly
CARBURETOR BODY aClean out all the jets and passages, and the venturi, making sure no gum or varnish deposits remainDry after cleaning with compressed airKeep clean for final reassembly