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Checking The Fuel Pump - Yamaha MX800V Service Manual

Multi-purpose engines
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FUEL PUMP
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4
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2
4
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3
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10

CHECKING THE FUEL PUMP

1.
1
3
2.
1
2
Check:
• Fuel hose "1"
• Fuel delivery hose "2"
• Pulsar hose "3"
• Fuel pump "4"
Cracks/damage  Replace.
Check:
• Fuel pump operation
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a. Connect the manual vacuum pump (Pressure/vac-
uum tester) "1" to the pulsar hose "2".
Pressure/vacuum tester:
YB-35956-B
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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4-2

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Mx825v

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