2013 600 IQ Racer Service Manual 9923892, Page 49Get this manual
Fuel Systems 4Connect pressure tester (PN 2870975) to fuel inlet fittingApply psi pressure and observe for one minuteThe needle and seat should hold pressure indefinitelyIf the pressure drops, carefully inspect the needle and the needle seatThe needle can be replaced (needle supplied with float and seat)
CARBURETOR ADJUSTMENT
Throttle Valve Synchronization
All throttle valve synchronization adjustments are made to the MAG throttle valveThe PTO throttle valve is nonadjustable and considered the base throttle valveThrottle valve synchronization can be performed with the carburetor rack installed or removed from the engine1If running, turn off engineRemove the air box2Remove the carburetor covers3Hold the throttle bell crank wide open on the carburetor4The bottoms of each throttle valve should be flush with the top of the intake bores5If adjustment is required, hold the PTO carburetor flush with the top of intake boreTurn the throttle stop screw in or out to set the PTO throttle slide flush with the intake bore