Checking The Fuel Pump; Checking The Fuel Cock - Yamaha XV16AL Service Manual

6
CARBURETOR
EAS00504

CHECKING THE FUEL PUMP

1. Check:
• fuel pump 1
▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼ ▼
a. Disconnect the fuel hose (fuel pump to
carburetor) 2 from the carburetor.
b. Place a container under the end of the
fuel hose.
c. Set the fuel cock to "ON" or "RES".
d. Start the engine and check if fuel flows
from the fuel hose 2.
Fuel flows.
Fuel does not flow.
e. Stop the engine and check if the fuel
stops flowing from the fuel hose 2.
Fuel stops flowing.
Fuel flows.
▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲ ▲
EAS00505

CHECKING THE FUEL COCK

1. Drain:
• fuel
(from the fuel tank)
2. Disconnect:
• fuel hose
(from the fuel cock)
3. Remove:
• fuel cock 1
4. Check:
• fuel cock
Cracks/damage/wear → Replace.
5. Check:
• fuel cock strainer 1
(with compressed air)
Dirt/obstruction → Clean.
Damage → Replace the fuel cock as a set.
• rubber gasket 2
Cracks/damage/wear → Replace.
6 - 19
CARB
Fuel pump is OK.
Replace the fuel
pump.
Fuel pump is OK.
Replace the fuel
pump.