2011 Arctic Cat 450/550/650/700/1000 ATV Service Manual, Page 170Get this manual
6Remove the throttle cable from the actuator arm
2Remove the vacuum piston assembly from the carburetor bodyAccount for spring, spring seat, and the jet needlePR162C
7Loosen the outer jam nut securing the throttle cable to the carburetor body; then route the cable out of the way