2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Manual, PN 5005483, Page 108Get this manual
FUEL SYSTEM PRIMER PUMP
PRIMER PUMP
Disassembly
IMPORTANT: To prevent excessive fuel spillage, disconnect hose connector at outboard before disassemblyLoosen screw retaining the primer pump knob shaft and disconnect the knob from the pumpRemove primer pump mounting screws, disconnect fuel hoses, and remove pump29283
IMPORTANT: The three smaller a-rings are made with special material; use only the proper a-rings
Cleaning and InspectionInspect brass plunger shaft for any burrs or scratchesRemove small scratches by polishing the plunger with crocus clothIf the plunger has deep scratches, replace the plungerInspect plunger where cross hole intersects inside holeAny burrs around cross hole will accelerate wear of a-ringsRemove any protruding burrs and polish with crocus cloth1Primer pump knob retainer 2Primer pump mounting screws