2003 Suzuki LT-Z400 Factory Service Manual, Page 73Get this manual
SMALL END 1.0the conrad small end inside diameter using Hie small bore gauge" If Ule conrad small end inside diameter exceeds the service replace the conrad with new one" 09900-20605: Conrod small end 1.0Service Limit: 20.040 mm (0.7890 in) DEFLECTION AND BIG END SIDE on the big end of the conrod can be estimated by the movement of the small end of the rad, This method can also used to check the extent of wear on the parts of the conrad's end09900-2070109900-20606: Dial 09900-21304: stand 00 mm) set (100 mm)
Conrod deflection Service Limit: 3.0 mm