1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 84Get this manual

1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124, Page 84

Pulse Limiter Fitting

The pulse limiter fitting for the VRO pulse hose has an integral check valve The check valve is not serviced separately, but it must be clear to allow normal pump operation

clogged check valve will limit fuel and oil supply, causing serious powerhead damage1Remove the pulse limiter fitting from the crankcase

2Backflush the valve with ONIC Carburetor and Choke Cleaner to remove any carbon deposits
INote If 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

3Clean the threaded portion of the fitting and apply ONIC Pipe Sealant with Teflon4Install the fittingSecure the pulse hose with ratchet clampPump For function tests of the pump, refer to Testing Fuel System, this sectionTo verify oil and proper fueloil ratios:

Back to 1996 Johnson Evinrude "ED" 40 thru 55 2-Cylinder Service Manual, P/N 507124