Polaris Big Boss 500 (Carburetor 3130898)
Use Main Jet #140
Use the long adjustment screw Needle Jet Y335

Polaris Magnum 500 1995-1998 (Carburetor 3130500, 3130753, 3130724)
Use Main Jet #140
Use the long adjustment screw Needle Jet Y335

Polaris Ranger 500 6x6 (Carburetor 3131209)
Use Main Jet #122.5
Use the long adjustment screw Needle Jet Y335

Polaris Ranger Series 10 2002-2003 (Carburetors 3131365 & 3131441)
Use Main Jet #135
Use the long adjustment screw Needle Jet Y511

Polaris Ranger Series 11 (Carburetors 3131362, 3131519 & 3131441)
From the kit you will use:
2x4 & 4x4 6x6 built after 1/03 use Main Jet #135
4x4 6x6 built before 1/03 use Main Jet #142.5
2x4 built before 8/9/02 use the long adjustment screw
2x4 built after 8/9/03 use the short adjustment screw
Needle Jet Y511

Polaris Sportsman 500 1995-1998 (Carburetor 3130754 & 3130665)
Use Main Jet # 140
Use Needle Jet Y335

These parts are stamped with the numbers.