2003 Ski-Doo ZX Series Factory Shop Manual, Page 128Get this manual
Section 04 ENGINE Subsection 03 (493, 593, 593 HO, 693, 793 AND 793 HO ENGINE TYPES)
TROUBLESHOOTING
Before completely disassembling the engine, check airtightnessRefer to LEAK TEST AND ENGINE DIMENSION MEASUREMENTNOTE: The following procedures can be done without removing the engine from the chassis
Unscrew valve piston no9Remove bellows no11 and spring no12Remove cylindrical screwsRemove valve housing no13Pull out exhaust valve no15
COMPONENT REMOVAL WITH THE ENGINE INSTALLED
Most engine components can be removed with engine on vehicle such as: cylinder head cylinder head cover piston(s) piston ring(s) cylinder(s) rewind starter oil pump water pump magneto flywheel RAVE valve(s) reed valve(s)
A32C15A
RAVE VALVE PARTIALLY REMOVED
2, Cylinder
Remove spark plugs, coolant outlet no30Unscrew cylinder head cover no2 then cylinder head no3