Idle RPM not responding during adjustment

by Ray in 912 / 914 Technical Questions 2 years ago

Hi all,

Recently, i encountered this defect where my Idle RPM does not respond to adjustment that i made on either side of the carburetor. Anyone has any postulation/experience of such defect?

Re: Idle RPM not responding during adjustment

by Bill Hertzel » 2 years ago

Bill Hertzel

13 1.95k 7.96k

Keep in mind that the Carb Throttle Springs are trying to OPEN the Throttle to the Full Power position.
As you back off the Idle position screws, The throttle arm will NOT naturally follow the screw.
You will need to continuously Pull the throttle cable to take up the slack.
You might find it easier to adjust the Idle too Low and then adjust it Up rather than DOWN.

Bill Hertzel
Rotax 912is
North Ridgeville, OH, USA
Clicking the "Thank You" is Always Appreciated by Everyone.

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Re: Idle RPM not responding during adjustment

by Tyler Hathaway » 2 years ago

Tyler Hathaway

3 478 1.39k

What are you actually adjusting? Are you trying to make the adjustment with the engine running? Are the stops on the throttle arms actually touching the idle stop/position screws?

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Idle RPM not responding during adjustment

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