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    BIG-JIM's Avatar
    BIG-JIM Posts: 3, Reputation: 1
    New Member
     
    #1

    Jul 31, 2011, 07:31 AM
    12.5 B&S engine won't idle.
    I am battling the same condition on a B&S 12.5hp 286700 series engine. The throttle butterfly doesn't close all the way. I have cleaned everything but can't seem to see what spring closes the throttle. I can push the governor arm forward and slow it down, but it pops right back open to about 1/2 throttle. Even with the engine shut off, the throttle remain a 1/2 open. Any ideas? The governor-link-spring is a mystery. I don't seem to understand it's function. How does it work?
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
     
    #2

    Aug 4, 2011, 06:53 AM

    Hi,
    Try the 270962 manual at this link:
    "K&T Parts House Lawn Mower Parts and Chain Saw & Trimmer Parts"
    And go to the governor chapter to look for the correct control panel.
    Peace,
    Clarke
    BIG-JIM's Avatar
    BIG-JIM Posts: 3, Reputation: 1
    New Member
     
    #3

    Aug 4, 2011, 07:56 AM
    Thanks crigby,looks like a great info source. I'll see what I can figure out.

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