1996-1998 Polaris Snowmobile Service Manual, Page 304Get this manual
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FUEL SYSTEMlCARBURETION Jet Part Numbers Jet Needle Part Numbers (Mikuni)
Needle Jet Part Numbers (Mikuni)
NFFDLF JFT NO PART NOP-4 (159) 3130162 P-2 (1 66) 3130460 P-4 (166) 313034