1999 Polaris PWC Genesis, Ficht, X-45 Service Manual, Page 32Get this manual
MAINTENANCElTUNE UP Engine Exhaust Cooling OrificeScreen Cleaning
The exhaust pipe rubber hoses and muffler are cooled by injecting small amount of water through an orifice from the main cooling system into the exhaust streamThe orifice and screen (if applicable) should be inspected and cleaned periodically to ensure proper cooling of the exhaust muffler and connector hosesBe sure hoses are not restricted (kinked or collapsed internally)
1 CAUTION: _
Do not enlarge the orifice or decrease in performance will result1Loosen clamp connecting hose to filting and remove lineUsing deep well 916" socket or flare nut wrenchremove fitting from exhaust manifoldInspect 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