Injection Timing Advance Mechanism

In order to comply with stricter emission standards, the advancement range for injection timing has been changed to 7.5° for all models. In addition, the front plate for the vacuum pump drive has been changed from internal drive teeth to a plate with an axial lift cam. This is due to a change from a twin-diaphragm to a piston type pump.

Fig 1: Old and New Timing Advance Mechanisms

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