2004 SR Johnson 2-stroke 40, 50HP Service Manual, Page 139Get this manual
FUEL SYSTEM COMPONENTS
COMPONENTS
The carbureted fuel system consists of the following components: Fuel filter Primer pump (40R, 40RL Models) Primer solenoid (4050 PL Models) Fuel pump (40R, 40RL Models) OMS (Oil Metering System) pump (4050 PL Models) Carburetors Intake manifold
Primer Pump
40R, 40RL MODELS
Fuel mixture enrichment for cold starting and warm-up is provided by manually operated primer pumpPull primer knob through its full stroke twice
Fuel Filter
40150 PL MODELS
An in-line fuel filter is located in the supply side of the fuel system1Manual primerpump valve