Description
Choke Return Spring (Rotax Part No. 938286)
Description
A calibrated stainless-steel return spring for the choke lever assembly on Rotax 912 and 914 carburettors. Designed to pull the choke valve closed automatically, this spring ensures reliable choke operation and correct mixture control during engine start-up.
Key Features
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Genuine Rotax part number 938286, superseding older 938287 part
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Made from stainless-steel for corrosion resistance and long-term durability
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Precisely tensioned to close the choke reliably without restricting cable movement
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Compatible with Bing carburettor choke mechanisms on 912/914 engines
Benefits
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Ensures the choke returns to the closed position after use
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Supports consistent cold-start performance and prevents unmetered air intake
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Durable design maintains preload over hundreds of cycles
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Easy to install during choke housing service
Application Notes
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Install spring across choke shaft according to Rotax maintenance guidelines
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Inspect housing O‑ring and choke components during service—spring effectiveness depends on free movement and good seal condition
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Part 938286 is updated in the 2022 carburettor revision to become the current standard choke return spring
