1999 Ski-Doo Factory Shop Manual Volume Two, Page 93Get this manual
Section 04 ENGINE Subsection 02 (443 AND 503 ENGINE TYPES)
ENGINE REMOVAL AND INSTALLATION
Disconnect or remove the following:
WARNING
Before disconnecting any electrical wire in starter system always first disconnect the BLACK negative battery cable (on electric starting models) negative cable from battery (on electric starting models) belt guard drive belt drive pulley using appropriate puller, refer to 05-03 DRIVE PULLEY air silencer and carburetors impulse line from engine crankcase 4-connector housing exhaust pipe and exhaust cooling hose on so equipped models oil pump inlet tube and plug it oil pump cable rewind cable: tie knot near rewind housing and remove starting grip