2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 149Get this manual
FUEL SYSTEM FUEL SYSTEM TESTS Results: Fluid moves through passage, compare results for both intake manifolds Fluid does not move through passage(s), or excessive restriction exists, clean manifold fitting with Nipple Cleaning ToolPIN 326623, and retest Excessive restriction exists, remove intake manifoldInspect and clean passagesLightly pressurize inlet fitting with alcohol and syringe
With lever in RUN position, no fluid should enter inlet fittingWith lever in prime position, fluid should come out of both outlet fittingsCleaning Tool