1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 102Get this manual
FUEL SYSTEMCARBURETION Carburetor Adjustment and ServicePro 785 (Mikuni) Carburetor Mixture Screw Adjustment
Carburetor mixture screws are pre-adjusted at the factory and usually no adjustment is necessaryExceptions would be after cleaning or overhaul, or when minor adjustments are required for altitudeRefer to carburetor specifications at the beginning of this section and perform the following adjustments123Loosen large clamp at air intake silencer and remove itSecure choke in its closed position using tape or tie to prevent debris from entering carburetors or engineRemove air intake cover, (6) screws, air intake screen, gasket, and (9) attaching bolts Remove air intake base from carburetors
NOTE: Use care to ensure lock washers are kept with bolts, and cover the carburetors to prevent debris from entering4
Low Speed Needle
Remove high speed needle adjustment limiter caps from each carburetorTurn high speed adjustment needles clockwise until lightly seated, then back each out the specified number of turnsNOTE: This is base setting onlyFine tuning may be necessaryHigh Speed Needle