Question about Tecumseh Lawn Boy Push Mowers Insight Silver Powered Series - Sens - A - Speed Walk Behind Mower - 10685

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I have a lawnmower with a tecumseh 173 cc engine that has experienced a sudden loss of power what could be causing this and how do i fix it

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  • rugrats1 Sep 08, 2009

    It only has one throttle speed. It starts fine but sounds like it is running at half speed or less. It runs fine just no power, is easy to start, doesn't miss etc. Air filter is clean, oil is good and clean.

  • bulldogchief
    bulldogchief May 11, 2010

    When you say "loss of power", what do you mean? Does it start but at full throttle it runs like it's at half-throttle? Will it not start? A "loss of pwer" can mean several different things.

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Ok, on the left side of the engine at the rear part of the block is a speed governor on Tecumseh vertical shaft engines. there is a spring that connects the governor to the throttle, if that spring is somehow broken or disconnected it can cause the problem you are experiencing. Check for that spring...if necessary, you can order a replacement through your user manual...cheers!

Posted on Sep 08, 2009

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