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Suzuki RM-Z250 - Page 123

Suzuki RM-Z250
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CYLINDER HEAD, CYLINDER AND PISTON 6-29
CYLINDER HEAD
Install the dowel pins 1 into the cylinder and then install the
cylinder head gasket 2 onto the cylinder.
Place the cylinder head 3 on the cylinder.
Apply engine oil to the washers and thread portion of the bolts
before installing the cylinder head bolts.
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)
Final 51 N·m (5.1 kgf-m, 37.0 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. (5-6)
Connect the ECT sensor coupler.
Connect the radiator hose. (20-24)
Install the exhaust pipe. (5-9, -10)
Install the throttle body. (13-15)
Install the TO sensor.
Replace the cylinder head gasket 2 with a new one.
Do not drop the cam chain 4 into the crankcase.

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