Tightening torques for threaded connections (Ducati ST2)

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Tightening torques for threade…

application	threading (mm)	Nm±5% tolerance	note
Head nuts (final torque)	10x1.5	38.5	(1) GREASE C
Connecting rod screws (final torque)	10x1	66.5	(2) GREASE C
Crankshaft gear nut	22x1	140
Alternator rotor nut	20x1	181.5	LOCK 8
Gear lever retaining screws	8x1.25	11
Clutch drum nut	20x1	181.5
Timing shaft gear nut	14x1	42
Timing pulley ring nut on drive	15x1	61.5
Timing pulley ring nut on head	15x1	71.5
Mobile tensioner pin	8x1.25	26
Spark plug	12x1.25	24.5
Gear drum positioning screw	16x1.5	32
Clutch housing screw	8x1	32	LOCK 4
Cam shaft support screws	6x1	11
Alternator and ignition cableway ring nut	22x1.5	42
Fixed tensioner pin	8x1.25	26
Flywheel flange screws	6x1	13.5	LOCK 8
Valve cover screws	6x1	11
Casing connection screws	8x1.25	24.5	(3) GREASE B
Casing connection screws	6x1	11
Gearbox bearing plate screws	6x1	9	LOCK 1
Water pump bearing screws	6x1	9	LOCK 1
By-pass plug	18x1.5	42	LOCK 2
Cylinder head stud bolts	10x1.5		LOCK 2
Intake and exhaust flange stud bolts	8x1.25		LOCK 2
Mesh filter oilway plug	12x1	23.5	LOCK 5
Oil pump oilway plug	10x1.5	9	LOCK 5
Water pump delivery port	22x1.5	23.5	LOCK 5
Oil filter nipple	16x1.5	42	LOCK 1
Oil drain plug	22x1.5	42
Idle warning light switch	8x1	6
Mesh oil filter	22x1.5	42
Cartridge oil filter	16x1.5	17.5
Water intake port	30x1.5	23.5	LOCK 5
Breather cap	40x1.5	42
Radiator hose closing plug	14x1.5	42
Alternator stator screws	6x1	9	LOCK 1
Intake and exhaust manifold nuts	8x1.25	23.5
Starter idling gear pin screws	6x1	9	LOCK 2
Filler	12x1	23.5	LOCK 5
Oil pump body screws	8x1.25	23.5
Oil pump body and cover screws	6x1	9
Ignition sensor screws	5x0.8	5
Pressure switch	10x1	19
Alternator cover screws	6x1	9
Screws for water connection to cylinder and head	6x1	9
Clutch cover screws	6x1	9
Starter motor screws	6x1	9	LOCK 2
Water temperature warning light switch	10x1	23.5

(1) Preliminary torque: first 15 Nm, then 30 Nm.
(2) Preliminary torque: first 19.5 Nm, then 34.5 Nm.
(3) Preliminary torque: 18.5 Nm.

Note. For the symbols and specifications of the products used, see "Product Specifications " in the "Description" section.

See this article in russian language

This article has been reviewed: Evgeny Bogomolov

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Ducati ST2 : Engine repair

Testing the engine sensor air gap
Testing the engine timing
Reassembly timing belts
Reassembly head timing pulleys

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ST2 (1997-2003)