G'day,
Yes, it has an air vane choke system, I had the carby apart and the jet is tight and clean. But I will check the rocker adjustment and get back to you.

Entire Thread
Subject	Posted By	Posted
B&S 20hp hunts through the rev range.	mm-mowers	Yesterday at 05:47 AM
Re: B&S 20hp hunts through the rev range.	NormK	Yesterday at 06:39 AM
Re: B&S 20hp hunts through the rev range.	AVB	Yesterday at 12:25 PM
Re: B&S 20hp hunts through the rev range.	mm-mowers	8 hours ago

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