2003 2005 YFM45FAR, YFM450FAR Kodiak OEM Service Manual, Page 160Get this manual
Quality of the image is intentionally reduced!
CYLINDER AND PISTON
2nd step: Measure piston skirt diameter "P" with micrometera 5.0 mm (0.20 in) from the piston bottom edge
Piston skirt diameter "P" Standard
84.4458