2004 Polaris Freedom, Virage, Genesis and MSX-140 Service Manual., Page 152Get this manual

2004 Polaris Freedom, Virage, Genesis and MSX-140 Service Manual., Page 152

FUELEXHAUST SYSTEMS Mixture Screw Adjustment and Tuning 1The low speed mixture screw is located lowermost on carburetorRemove
to one end with the Mity VactApply approximately PSI to the end of the valve marked VACThe valve should hold steady pressureTry
to apply pressure to the other end of the valve, it should allow air to go through easily with no pressure build upReplace
the check valve if found to be faulty Relief Valve Testing Apply air pressure with Mity Vact to relief valveWith air pressure
applied in the direction of the arrow, the valve should "pop" between 1.0 and 1.5 PSIIn the opposite direction it should
hold pressure Relief Valve Apply1.5 PSI Fuel Tank Check Valve Testing To test the air inlet check valve, remove the valve
and apply approximately PSI pressure to the end of the valve marked VACThe valve should hold steady pressureConnect the tester
to the other end and apply pressureAir should pass through the valve with no pressure build upReplace the check valve if