Bombardier SeaDoo 1998 factory shop manual, Page 160Get this manual
Section 05 COOLING SYSTEM Subsection 02 (CIRCUIT, COMPONENTS AND CARE)
The water flow regulator valve is mounted directly onto the muffler-
CAUTION
Do not change the calibration of the spring, otherwise serious engine damage can occurAt low speed, water pressure in the supply hose of the regulator valve is not sufficient to overcome the spring of the regulator valve; more water is being delivered to the injection fitting at the tuned pipe
F01E1FA
SPX MODEL 1Water supply hose of regulator valve 2Regulated water to injection fitting 3Water injected into the muffler