1983 Yamaha 30EN Outboards Service Manual, Page 31Get this manual
FUEL SYSTEM (From fuel tank to the bottom cowling joint) Description The fuel tank assembly is made up of 24 (6.3 US gal) fuel tank, fuel meter assembly, fuel hoses, joints, and priming pump1Fuel meter assembly The fuel meter assembly has strainer on the end of the suction pipe in order to remove dust and impurities from the fuelFuel hose assembly The fuel hose assembly consists of two fuel joints, two fuel hoses (long and short), and priming pumpThe long fuel hose is fitted with the "TANK MARK" collarThe arrow mark on the priming pump indicates the direction of fuel flow