1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 114Get this manual
FUEL SYSTEMCARBURETION Carburetor DisassemblyllnspectionKeihin 22Inspect diaphragm for signs of hardening, stretched or weak areas, holes, or tears
23Measure control arm height from machined surface to top of plastic button on control arm
10 10 10 "C
NOTE: Top of plastic button #2 should be .060(1.5 mm) below casting surface #1 as pe illustration at rightVariances in control arm positioning will result in incorrect fuel supplyIf the control arm is too close to the diaphragm, fuel levels will increase, resulting in rich operating conditionIf the control arm is too far below the casting parallel line lean condition will result