engine, rotax 1503 4-tec - Sea-Doo.net
engine, rotax 1503 4-tec - Sea-Doo.net
engine, rotax 1503 4-tec - Sea-Doo.net
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Section 01 ENGINES (<strong>1503</strong> 4-TEC)Subsection 06 (CYLINDER HEAD)InstallationFor installation, reverse the removal procedure.Pay attention to the following details.Ensure dowel pins are in place.Install new cylinder head gasket.CAUTION: Each installation of the cylinderhead requires a new cylinder head gasket. Usinga gasket twice will cause <strong>engine</strong> damage,even if the <strong>engine</strong> had not run.Install cylinder screws M11 no. 17. Torquescrews as per following procedure.CAUTION: This assembly uses stretch screws.As the screws have been stretched from theprevious installation, it is very important tomeasure each screw at assembly. If screw isout of specification, replace by a new. Failureto replace screws and to strictly follow thetorque procedure may cause screws to loosenand lead to <strong>engine</strong> damage.SERVICE LIMITCYLINDER SCREW M11148.5 mm (5.846 in)R<strong>1503</strong>motr100A21. Cylinder screws M112. Angle torque wrenchRemove crankshaft locking tool then install plugwith sealing ring.CAMSHAFTRemovalRemove:– valve cover– rocker arms– chain tensioner (refer to CYLINDER BLOCKsection)– camshaft timing gear– camshaft lock no. 20– camshaft no. 21.112smr2005-036-002_aNOTE: Torque screws no. 16 after the tighteningof the cylinder head screws is finished.Torque screws according to following sequence.First torque to 40 N•m (30lbf•in).Then tighten screws turning an additional 120° rotationwith a torque angle gauge and finish tighteningwith a 90° rotation. Torque screws no. 16to 10 N•m (89lbf•in).R<strong>1503</strong>motr101A1. Camshaft lock2. Camshaftsmr2005-036 79