1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 32Get this manual
MAINTENANCEfTUNE UP Engine Exhaust Cooling OrificeScreen Cleaning The exhaust pipe rubber hoses and muffler are cooled by
for proper cooling performanceDo not enlarge the orifice or decrease in performance will result Exhaust Pipe Loosen clamp
connecting hose to fitting and remove lineUsing deep well 916" socket or flare nut wrench, remove fitting from exhaust pipeInspect
fitting for debris or restriction and clean if necessaryInspect and clean orifice and screenApply pipe thread sealant to
threads of fitting and re-installTighten securelyRe-install air bypass hose and tighten clamp Orifice Size: 700s.1050s .055"