2004-2005 Honda TRX450R Factory Sevice Manual, Page 90Get this manual

2004-2005 Honda TRX450R Factory Sevice Manual, Page 90

FUEL SYSTEM
CARBURETOR DISASSEMBLY
AIR CUT-OFF VALVE
Disconnect the vacuum hose from the air cut-off

Remove the screw and air cut-off valve Remove the O-ri ngs and slow air jet
VACUUM HOSE

Apply vacuum to the vacuum portThe vacuum should maintainedAir should not flow th ro ugh the valve ports when he vacuum is app lied, and sho uld flow when the vacuum is not applied

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