2003-2006 Yamaha Snowmobile RX1 Service Manual, Page 242Get this manual
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FUEL PUMP
INSPECTION 1 Inspect: Fuel hose Vacuum hose ClogsdamageReplace
2 Inspect: Fuel pump operationInspection steps: Connect the Mity vac to the vacuum hose 2 Mity vac: 90890-06756, YB