1989 Ski-Doo Repair Manual, Page 142Get this manual
Section 02 ENGINE Sub-section 05 (503 ENGINE TYPE)
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Injection oil reservoir Oil reservoir supporr Grommet Male connector Oil reservoir cap Gasket Oil level sensor Elastic stop nut M5 0.8 (4) Rubber washer (4) Lock washfJr mm (2) Screw M6 76 (2) 01 line 38 mrn Oil line 102 mm Spring clip (3) Spring clip (1) Filter Oil pump mounting flange Oil pump Washer 6.2 mm (2) Oil pump gear27 teeth Lock nut M6 Lock washer mm (2) Screw M5 16 (2) Taptite screw MS 16 (2) Noedle roll Washer 4,3 Gear teeth
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Oil banjo gasket (4) Banjo (2) Banjo bolt (2) Oil line 325 mm Oil line 325 mm Clamp (4) Taptite screw Mb 16 (4) Rubber ring Retainer O-ring Plate Screw with lock washer (B) Stop pin Gasket Plate Washer Hexagonal screw M6 Spring Washer Lever Lock washer 6' mrn Nut M6 Seal Gasket set Injection oil Clip Baffle