2003 Suzuki LT-Z400 Factory Service Manual, Page 295Get this manual
SERVICING INFORMATION
TIGHTENING TORQUE CHART
For other nuts and bolts not listed in the preceding page, refer to this chart:
Bolt Diameter (mm)
4 10 12 14 16 18
Conventional or "4" marked bolt Nm
1.5 5.5 13 29 45 65 105 160
0.15 0.3 0.55 1.3 2.9 4.5 6.5 10.5 16.0