Description
Rotax Soft Start Set (Part No. 881280)
Description
A genuine Rotax soft-start module kit (also known as “Advanced Start System” or Easy Start) designed for Rotax 912 series engines equipped with electronic ignition. This kit includes two SMD ignition modules and the necessary hardware to facilitate delayed ignition timing during engine start-up—resulting in smoother, easier cold starts and reduced starter strain.
Kit Contents
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2 × Soft-start SMD ignition modules (Rotax ignition timing control units)
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Mounting disc, fasteners, cable grommets, and plug‑in connector accessories
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Designed for 6‑pin or 4‑pin electronic ignition setups
Key Features
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Automatically delays ignition timing during engine cranking to improve start behavior
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Fully compatible with OEM electronic ignition systems on 912, ULS, iS, and 914 engines
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Activation triggered by starter relay signal; reverts to standard ignition timing once engine fires
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Integrates seamlessly with existing ignition harness architecture
Benefits
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Ensures smoother cold starts, even in low-temperature conditions
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Reduces mechanical and electrical load on starter motor and wiring
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OEM-approved part designed to maintain engine reliability and operational integrity
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Retrofittable on pre‑factory‑fitted Rotax engines with the correct ignition connectors
Installation & Service Notes
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Compatible with 912 S (from SN ~4,923,847), 912 ULS (from SN ~6,775,360) and later—requires activation wiring to be correctly set up
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Must follow proper installation guide; Tecnam issued a service bulletin to disable soft start on certain airframes due to wiring concerns—check compatibility before fitting
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Replacement of flywheel hub to accommodate module connections may be required during upgrade
