1995 Johnson Evinrude "EO" 90 CV 85 thru 115 Service Manual, P/N 503150, Page 65Get this manual
Pulse Limiter Fitting
El check valveThe check valve is not serviced separately, but
must be clear to allow normal pump operationA clogged check valve will limit fuel and oil supply, causing serious powerhead damage1Remove the pulse limiter fitting from the crankcasef61 2Backflush the valve with OMC Carburetor and Choke Cleaner to remove any carbon depositsIf you find excessive carbon deposits, check the engine for causes of backfiring: Linkage adjustments incorrect Engine temperature incorrect Crankcase air leaks Carburetor problems Extended use of flushing attachment
Is1 The pulse limiter fitting for the VRO pulse hose has an integral
3Clean the threaded portion of the fitting and apply OMC Pipe Sealant with TeflonInstall the fitting, and secure the pulse hose with clampPump For function tests of the System, this sectionpump, refer to Testing Fuel