1974 Ski-Doo Shop Manual, Page 239Get this manual

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SPARK PLUG CHART

M280T31 W260T1 W260T1 W260T1 W240T1

M280T31

M280T31 W260T1 M260T1 W260T1 M260T1 W280M1 M280T31 W260T1 M280T31 W280M1 M280T31 M280T31 M310T31S W2

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