Suzuki RM-Z250 Owner's Manual page 105

• With the cylinder head snugly seated on the cylinder, secure it
by tightening the cylinder head bolts 5 in diagonal stages.
• Tighten the cylinder head bolts 5 to the specified torque.
 Cylinder head bolt: Initial 25 N·m (2.5 kgf-m, 18.0 lbf-ft)
• After tightening the cylinder head bolts to specification, tighten
the cylinder head base nuts 6 and cylinder base bolt 7 to the
specified torque.
 Cylinder head base nut: 10 N·m (1.0 kgf-m, 7.0 lbf-ft)
Cylinder base bolt: 12 N·m (1.2 kgf-m, 8.5 lbf-ft)
• Install the engine mounting upper brackets. (4-7)
• Connect the ECT sensor coupler.
• Connect the radiator hose. (5-13)
• Install the exhaust pipe. (4-10)
• Install the throttle body. (4-47)
• Install the TO sensor.
Final 51 N·m (5.1 kgf-m, 37.0 lbf-ft)
DISASSEMBLY AND ASSEMBLY 4-25