2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 36Get this manual
MAINTENANCE Exhaust Cooling Injector Maintenance
The exhaust pipe rubber hoses and muffler are cooled by injecting small amount of water injected through an orifice from the freshwater cooling system into the exhaust streamThe orifice 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)CAUTION: 1Loosen clamp connecting hose to fitting and remove hose
FRESHWATER INJECTOR 2Inspect and clean orifice3Reinstall cooling hose