2008 Polaris ATV Sportsman 300 400 H.O. Service Manual, Page 93Get this manual
FUEL SYSTEM
CHAPTER FUEL SYSTEM
CARBURETION INFORMATION4.2
SPECIAL TOOLS 4.2 CARBURETOR JETTING4.2 MIKUNI OPTIONAL JET PART NUMBERS 4.2
CV CARBURETION SYSTEM 4.3
CARBURETOR VENTING EXPLODED VIEW 4.3 CARBURETOR VENTING 4.3 BST 34 CARBURETOR EXPLODED VIEW (UPPER COMPONENTS) 4.4 BST 34 CARBURETOR EXPLODED VIEW (LOWER COMPONENTS) 4.5 CARBURETOR FUNCTION 4.6 MIKUNI CV CARB OPERATION 4.6 STARTER SYSTEM (CHOKE OR ENRICHMENT) 4.7 PILOT (IDLE AND SLOW) SYSTEM 4.8 MAIN SYSTEM 4.8 FLOAT SYSTEM4.9 PILOT SCREW 4.9 AIRFUEL MIXTURE RATIO4.10 JET NEEDLE 4.10 NEEDLE JET 4.10 THROTTLE OPENING VSFUEL FLOW 4.11