IH: Engine Control - Sub-01F

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====== IH: Engine Control - Sub-01D ======
====== Revised timing marks starting with 1980 models ======

  * The timing marks have been revised on all 1980 and later 1000cc (crankcase number 780-108-001 and up) and 1340cc models to enable the timing to be set electronically at the factory. This step will reduce the number of timing adjustments required during pre-delivery and set-up. The procedure used to set the timing is exactly the same. 
  * Only the timing marks have changed. The front cylinder advance timing mark has changed from a straight line to a 1/8" dot and the rear cylinder advanced timing mark now represented by a lazy eight.
  * Revised timing marks:
    * A straight line for the front cylinder (top dead center).
    * An 1/8" drilled dot for the front cylinder (full advance).
    * A lazy eight {{:techtalk:ih:engctl:lazy_eight_icon.jpg?direct&50|}} for the rear cylinder (full advance).


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Trace: • MiscRes: Video • REF: Hex, Socket (Allen) and Torx Bolt and Screw Wrench Sizes • IH: Engine Mechanicals - Sub-09J • IH: Carburetor, Intake Manifold & Exhaust - Sub-01B • IH: Engine Mechanicals - Sub-09S • REF: Service Procedures 11I • REF: Suspension • EVO: Engine Control • REF: Tools - 115 • REF: Electrical System