1993 Johnson Evinrude "ET" 40 thru 55 Service Manual, P/N 508283, Page 86Get this manual

1993 Johnson Evinrude "ET" 40 thru 55 Service Manual, P/N 508283, Page 86

Pulse Limiter Fitting
rv check valveThe fitting valve isVRO serviced separately, but it The pulse limiter for the pulse hose has an integral check not
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 pulse hose

2Backflush the valve with mild aerosol solvent 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

3Position the fitting in the pulse hose with blue nipple facing the pump4Secure the pulse hose with ratchet clampsPump

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