Bombardier SeaDoo 1999 factory shop manual, Page 180Get this manual
Subsection 02
Section 05 COOLING SYSTEM (CIRCUIT, COMPONENTS AND CARE)
Disassembly Remove the cover no6 of the valve by releasing the spring no5
Unscrew the tapered needle no8NOTE: Hold the valve to prevent it from turning
WARNING
Firmly hold cover to valve baseThe spring inside the valve is applying pressure against the cover1