1986 Ski-Doo Factory Shop Manual, Page 282Get this manual

1986 Ski-Doo Factory Shop Manual, Page 282

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Section 03 TRANSMISSION Sub-section 04 (DRNEN PULLEY)
Apply chain tension
ADJUSTMENT
10, Spring
Spring torsional pre-load
Spring torsional pre-load should be 3.6 kg (8 Ib