1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 29Get 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 pump
The priming pump has check valves at its inlet and outletBy squeezing the priming pump, fuel can be supplied from the fuel tank to the carburetor
1Fuel meter assemblyThe fuel meter assembly has strainer on the end of the suction pipe in order to remove dust and impurties from the fuel
1Fuel meter assembly 3Fuel strainer
2Suction pipe
Fuel hose assemblyThe 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