2004 Skidoo ZX Series Service Manual, Page 538Get this manual
Section 13 TECHNICAL DATA Subsection 02 (ENGINES)
MX 550 F, Legend 550 and Legend GT 550 F
Country Engine Type ENGINE
Number of cylinder Bore Stroke Displacement Compression ratio Maximum power engine speed Piston ring type
MX 550 CANU.S550 CANU.S552
Legend Grand Touring 550 CANU.S
2 Standard mm (in) mm (in) cm3 (in3) 76 (2.992) 61.00 (2.402) 553.40 (33.771) 9.6 0.5 6950 100 RPM 1st 2nd New Wear limit New Wear limit New Wear limit
Semi-trapezoidal Rectangular mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) 0.40 to 0.55 (.016 to .022) 1.0 (.039) 0.04 to 0.08 (.0016 to .0030) 0.2 (.0079) 0.147 0.026 (.0058 .0010) 0.2 (.0079) 0.3 (.012) 0.06 (.0024) 0.200 to 0.527 (.0079 to .0207) 1.2 (.0472)