2004 Skidoo ZX Series Service Manual, Page 350Get this manual
Section 07 ENGINES MANAGEMENT (4-TEC) Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
Electrical Inspection
Refer to THROTTLE POSITION SENSOR (TPS) and IDLE BYPASS VALVE in ELECTRONIC MANAGEMENT belowTo verify the engine RPM with the tachometer (PN 529 014 500), use the following procedureThe inductive tachometer works on these ignition coils (stick coils) as well as on regular high tension coilSimply wrap the tachometer's wire few times around the protruding part of ignition coil
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1Throttle body 2Hoses 3Screws
Slightly pull throttle body out Disconnect connectors from idle bypass valve, and TPS Disconnect throttle cableA32CCIA