1986 Ski-Doo Factory Shop Manual, Page 362Get this manual
Section 04 ELECTRICAL Sub-section 02 (IGNITION TIMING)
IGNITION TIMING
BREAKER POINTS IGNITION SYSTEMS
247 ENG INE TYPE
fwo methods are detailed in this section; the first using the timing marks, stamped on the engine, the second Retighten retaining screws at this position,
Jsjng Top Dead Center gauge
mark ' craOkcastl,
Timing marks procedure
1Disconnect spark plug wire and remove spark plug2Remove rewind starter assembly from engine then remove the starting pulley from magneto ringToo early:
Tum armature plale clockWise
Too late: Turn armature plale counler-cloc'kwise
3Rotate flywheel until breaker points, visible through magneto ring opening, are fully openedAdjust points gap