Bombardier SeaDoo 1996 factory shop manual, Page 105Get this manual
Section 05 COOLING SYSTEM Sub-Section 01 (COMPONENTS)
GENERAL
CAUTIONAll hoses and fittings of the cooling system have calibrated inside diameters to assure proper cooling of the engineAlways replace using appropriate Bombardier part numberThe Serial Cooling System is utilized on the 717 and 787 engines, which offers an efficient cooling of the combustion chamber to prevent the possibilities of detonation
3, Elbow Fitting
Water injection used on exhaust system cools the exhaust gases to obtain maximum performance from the tuned pipeThe elbow fitting has calibrated inside diameter to optimize water flow in tuned pipeThe water injection also helps in reducing noise level and cools components of the exhaust systemCAUTIONThe elbow fittings are calibrated and can not be interchanged with one of different size as severe engine damage could resultThe elbow fitting can be identified by using the number stamped onto the fitting or by measuring its inside diameterRefer to the following illustration and chart-