2004 Ski-Doo Racing Handbook, Page 221Get this manual
SECTION 072003 MX Zx 440 INFORMATION
2003 OPTION PACKAGE COLOR MODEL NUMBER ENGINE Engine manufacturer Engine type noLubrication type Number of cylinders Bore 1st oversize bore 2nd oversize bore Stroke Displacement Cylinder(Piston to mm) Compression ratio 1st piston ring shape type 2nd piston ring shape type Reed valve Reed valve part number RAVE system Opening engine speed Spring part number Spring color Spring wire diameter Spring free length Cooling system type Thermostat opening tempCap opening pressure Piston ring end gap New, minNew, maxWear limit Ringpiston groove clearance New, minNew, maxWear limit Pistoncylinder clearance New, minWear limit Cylinder taper (max New, maxWear limit Cylinder out of round (max New, maxWear limit