Yamaha F50F Service Manual page 69

FUEL
Special service tools .....................................................................................4-1
Hose routing ...................................................................................................4-2
Fuel and blowby hoses..............................................................................4-2
Cooling water pilot hoses ..........................................................................4-3
Fuel filter and fuel pump ............................................................................... 4-4
Checking the fuel pump.............................................................................4-6
Disassembling the fuel pump .................................................................... 4-6
Checking the diaphragm and valves .........................................................4-7
Assembling the fuel pump ......................................................................... 4-7
Checking the fuel joint ............................................................................... 4-7
Intake manifold............................................................................................... 4-8
Checking the throttle position sensor ......................................................4-11
Installing the throttle position sensor .......................................................4-11
Checking the idle speed control ..............................................................4-11
Vapor separator............................................................................................ 4-12
Disconnecting the quick connector.......................................................... 4-16
Measuring the fuel pressure .................................................................... 4-16
Checking the pressure regulator ............................................................. 4-17
Draining the fuel ......................................................................................4-18
Disassembling the vapor separator ......................................................... 4-18
Checking the vapor separator .................................................................4-19
Adjusting the float ....................................................................................4-19
Assembling the vapor separator..............................................................4-20
6C13G11
Fuel system
1
2
3
4
5
6
7
8
9