1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 120Get this manual
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FUEL SYSTEMCARBURETION Carburetor AssemblyKeihin 4 Install jet block and tighten screw securelyGrease high and low speed mixture screw O-ringsInstall O-rings, washer, spring, and screw(s)Turn screw in