2004 Skidoo ZX Series Service Manual, Page 273Get this manual
Section 05 ENGINES (4-TEC) Subsection 06 (CYLINDER AND CYLINDER HEAD)
R1004motr106A R1004motr105A
1Sealing lips of valve stem seal
To ease installation of cotters, apply oil or grease on them so that they remain in place while releasing the springAfter spring is installed, ensure it is properly locked by tapping on valve stem end with soft hammer so that valve opens and closes few timesCAUTION: An improperly locked valve spring will cause engine damage
First measuring diameter in line with cylinder bottom Second measuring diameter Third measuring diameter 60 mm (2.362 in) 50 mm (1.968 in)
CYLINDER TAPER mm (in) MAXIMUM (NEW) SERVICE LIMIT 0.038 mm (.001 in) 0.090 mm (.004 in)
CYLINDER
NOTE: The engine is equipped with two different cylinders no2 and no72