Yamaha MX800V - Checking the Fuel Pump

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FUEL
FUEL PUMP
CHECKING THE FUEL PUMP
1. Check:
• Fuel hose “1”
• Fuel delivery hose “2”
• Pulsar hose “3”
• Fuel pump “4”
Cracks/damage  Replace.
2. Check:
• Fuel pump operation
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a. Connect the manual vacuum pump (Pressure/vac-
uum tester) “1” to the pulsar hose “2”.
b. Place the container underneath the end of the fuel
delivery hose “3”.
c. Operate the manual vacuum pump (Pressure/vac-
uum tester) “1” and check that gasoline is flowing
out of the fuel delivery hose “3”.
d. If not, replace the fuel pump assembly.
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Pressure/vacuum tester:
YB-35956-B