1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 134Get this manual
CHAPTER THREE
Table 11 CARBURETOR PILOT AIR SCREW AND IDLE SPEED (continued) Pilot air screw turns out 1996 Z440 ZR440 Cougar, Cougar 2-Up EXT 580, ZR 580 (carbureted) ZRT600 1997 Z440 ZL 440, ZR 440 Panther 440 and 550 Cougar Powder Special EXT 600, ZRT 600, Powder Extreme 1998 Z440 Panther 440 ZL440 ZR440 ZL500 Panther 550 Cougar Powder Special EXT 600, ZRT 600 Powder Extreme 1-1 12 12 1-1 12 12