Throttle Control issue - Snowblower Forum : Snow Blower Forums
 
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post #1 of 5 Old 02-21-2020, 12:10 AM Thread Starter
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Red face Throttle Control issue

After replacing carb on a 208cc engine, was checking the throttle controls on the carb by moving the throttle lever from full to idle and back. At full throttle, the governor rod moves the throttle shaft connection on top of carb to the full position (the carb butterfly plate is full open) However, when the throttle lever is moved to idle or slow position, the governor rod fails to move the carb butterfly to idle.
Both the "throttle return spring" and "governor spring" have been replaced. Any suggestions fella's??
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post #2 of 5 Old 02-21-2020, 01:50 AM
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That is normal when the engine is not running.
When the engine is running, the governor will retract the linkage back to idle and overcome any spring tension on the linkage rod.
Also you better check or re-adjust the governor arm if you replaced any of those parts. It might be o.k. but check it anyways.
There is spring tension on the linkage at idle, when you put it at full throttle there is a lot more spring tension on the governor arm linkage.
The governor mechanism overcomes the spring tension to keep the throttle plate at a certain position when the engine is running, with the engine not running, there is nothing to overcome the tension and the plate will move to full open position, even with the throttle set at idle position.

Last edited by ST1100A; 02-21-2020 at 01:55 AM.
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post #3 of 5 Old 02-21-2020, 03:07 AM Thread Starter
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Thank-you brother...this has been one big adventure! But in the process learned a lot about the machine. The thought that the engine had to be running for that linkage feature to activate, was on my mind, but didn't want to screw with it, and make the situation worse..haha!...but whoa!...your answer solved my questions!...THANK-YOU A MILLION!!
Regards, Larry Rothfork

Last edited by Larry Rothfork; 02-21-2020 at 03:19 AM.
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post #4 of 5 Old 02-21-2020, 03:23 AM
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welcome to the forum Larry, please hang around and learn more
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post #5 of 5 Old 02-21-2020, 06:27 AM
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