engine, rotax 1503 4-tec - Sea-Doo.net

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Section 01 ENGINES (1503 4-TEC)Subsection 07 (CYLINDER BLOCK)11R1503motr05AENGINE UPSIDE DOWN1. Oil reservoir plug screw with O-ring– cylinder block screws no. 3R1503motr20A1. Thrust washer– balancer shaft.1R1503motr109A1. Screws– cylinder block lower half– thrust washers no. 6InspectionCheck balancer shaft and replace if damaged.If the gear on the balancer shaft is damaged, replacebalancer shaft.Check gear on the crankshaft at the same time andreplace crankshaft if necessary (refer to CRANK-SHAFT above).Balancer Shaft Bearing Seat PlayMeasure all balancer shaft bearing seats. Compareto inside diameter of balancer shaft bearings(elsewhere in this section).12R1503motr23A1. Micrometer2. Balancer shaft area for bearingSMR2005-037 105
Section 01 ENGINES (1503 4-TEC)Subsection 07 (CYLINDER BLOCK)BALANCER SHAFT SEAT DIAMETER mm (in)NEW MINIMUM 31.984 (1.2592)NEW MAXIMUM 32.000 (1.2598)SERVICE LIMIT 31.960 (1.2583)BALANCER SHAFT SEAT RADIALCLEARANCE mm (in)SERVICE LIMIT 0.07 (.0028)Balancer Shaft Axial ClearanceWhen assembling the cylinder-block, measure thebalance shaft axial play:1R1503motr17A 1 21. Mark on balancer shaft2. Mark on crankshaftCAUTION: Never forget thrust washers no. 6on PTO side to control axial adjustment on balancer.Insert thrust washers as soon as balancer shaft isin place as per following illustration.1R1503motr42A 21. Dial gauge2. Balancer shaftBALANCER SHAFT AXIAL CLEARANCE mm (in)NEW MINIMUM 0.02 (.001)NEW MAXIMUM 0.25 (.010)SERVICE LIMIT 0.35 (.014)InstallationFor installation, reverse the removal procedure.Pay attention to following detail.CAUTION: Balancer shaft and crankshaft markshave to be aligned.R1503motr20BTHRUST WASHER INSERT DIRECTION1. Thrust washerCAUTION: Thrust washers have to be flushwith the cylinder block sealing surface.106 SMR2005-037
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2005Engine Shop ManualROTAX ® 1503
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TABLE OF CONTENTSSAFETY NOTICE.....
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SAFETY NOTICESAFETY NOTICEThis manu
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INTRODUCTIONARRANGEMENT OF THISMANU
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