1998 Johnson Evinrude "EC" 125C, 130, 200, 225, 250 90 deg LV Service Manual, P/N 520212, Page 116Get this manual
3Press lightly on the syringe plunger: Fluid should move freely through fitting If fluid does not move freely through fittingreplace the inline check valveMove the vinyl hose to fitting Press lightly on the plunger: Fluid should not move freely through fitting If fluid moves freely through fittingreplace the inline check valve
4syringe
Function Test at CrankcaseAll Models
[] 1Connect an 'e inI.Dclear vinyl hose between the check valve and syringe filled with isopropyl alcoholThe fitting does not have to be removed from the crankcase for this test2Press lightly on the syringe plunger: Fluid should not move freely through the fitting If fluid moves freely through the fitting, replace the fitting3Draw out on the syringe plunger: Air should be drawn through the fitting into the clear hose If air cannot be drawn through the fitting, replace the fittingFunction Test at Internal Check ValveV6