1972-1981 Polaris Snowmobiles Master Repair Manual, Page 370Get this manual
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CARBURETION
Centurion Indy
1 12 turn
Engine Model
Jet Needle No"E" Clip Position 5DT49-2 6DP1-3 5DP7-3 6DH7-3
Needle Jets 0-8 (177) P-6