Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

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I need to know where the least expensive briggs 31q777-0136 engine for my rider can be purchased. Also will any other engines swap out with this?

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I can order you one for 450,

Posted on Jul 02, 2009

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Do you know that the first two numbers indicate the ci of the engine? You have a 31 ci engine and you can find that engine rated from 15.5 hp to 20 hp, depending on what the brand seller wants to say it is. They can underrate and engine but they can't say it larger than it is. So Sears can sell a 42" cut with a 15.5 hp engine on it or they can put the same engine on a 48" cut and call it an 18.5 hp. Both being 31 ci engines. My point being... find the cheapest 31 ci engine or even a 33 ci. Either will fit right up. The only problem you may encounter is the charging/wiring system may be different, but all you would have to do is put the alternator and harness off your old engine on the new one. That being said, do an internet search for an engine and let me know what you come up with and get back to me. I probably can save you some money with possibly a minor inconvenience of changing out the charging system. Dwain

Posted on Jul 01, 2009

  • Dwain Pippen Jul 05, 2009

    Cool... Make sure you're getting a new, complete engine with a two year warranty for $450.00.............



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