Evinrude Fuel Pump Diagram

When this is the case over time the fuel pump may fail and require replacement. 1970 9hp evinrude fuel pump diagram.

Fuel Pump Cap Kit Crowley Marine

The 99 uses either a type 2 or a type 4 pump.

Evinrude fuel pump diagram. A fuel pump rebuild kit is needed every so often with outboard motors. The inner rubber diaphragm can develop cracks or pin holes that effect proper fuel flow and inner check valves and springs can break causing complete pump failure. Fuel pump rebuild kit for johnson evinrude outboard.

By markdesmeules in forum johnson evinrude outboard forum replies. You are invited to join our public boat repair forum to seek assistance from other members. The fuel pump is the powerhouse that sends filtered gas to the engine.

You may also visit the boat motor manuals section of our site to obtain a service manual. Evinrude outboard motors with carburetors use one of five different kinds of vacuum diaphragm fuel pumps. If the fuel filter is clogged however debris can find its way into the pump.

Assembling an evinrude 99 horsepower outboard motors fuel pump is a fairly easy process. The illustrations below are copied off omcs fuel pump repair kit instructions 393088 but will also be applicable to the sierra or napa 18 7823 kit the instructions here are not mine but omcs this same basic fuel pump was used on many motors from made from 1959 thru about 1987 for 25 hp up to 40 hp.

Evinrude Fuel Pump Diagram