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  1. #1
    New Member
    Join Date
    Oct 2012
    Vidalia, La

    Default Cub Cadet LT1050 Will Not Start

    I have a LT1050 that will not start. It turns over fine. I have verified that it is getting fire from both plugs so that eliminates ignition. It seems like it is not getting fuel. I replaced the fuel filter and the fuel pump and still nothing. There is gas in the tank! It seems like it's not getting the pulse to the fuel pump. I pulled the fuel line forward of the fuel pump to the fuel filter to check if there was any type of suction on the line and there wasn't. There was very little fuel in the line or in the filter (yes the filter is in the right direction). It starts fine when I prime the carb with a little fuel but will not stay running. What am I missing? Thanks.

  2. #2
    Platinum Member
    Join Date
    Mar 2008

    Default Re: Cub Cadet LT1050 Will Not Start

    Sounds like you are on the right track on diagnosing the problem. Several other things to check: First, loosen the fuel cap to make sure it's airway is not stopped up.Another thing is to have an assistant to turn the ignition switch on while you are standing close to the carb side of the engine - you should hear a sharp click one time coming from the bottom of the carb. If not, the afterfire solenoid is gummed up and sticking. Repair.
    Next, drain the fuel tank of fuel and replace the flexible fuel line from the tank to the fuel pump (the old line may be getting soft and collapsing). disconnect fuel line at carb, crank engine to verify good fuel stream being pumped to carb. If not, retest to determine if fuel pump or fuel filter faulty (replace either with only OEM parts!)and replace balance of flexible fuel line.
    Once good fuel flow established to carb, engine should start/run. If not, then time to remove/clean carb and it's afterfire solenoid located at carb bottom. Get a carb rebuild kit, a magnifier glass, some stiff brass 20 ga wire and carb cleaner. take pleny of before/after pixs to know how to get all back together, take carb fully apart, soak parts in cleaner overnite, use magnifier and brass wire to probe all passageways in carb parts, compressed air to blow out parts; rebuild with fresh parts from kit as instructed. Patience precision,persistence.
    remount carb back to engine, remake all connections. Test for for proper start.

  3. #3
    New Member
    Join Date
    Nov 2012
    Craftsman 18HP

    Default Re: Cub Cadet LT1050 Will Not Start

    before you start tearing down the carb and buying parts, try spraying some carb cleaner into the carb thru the air intake. My Husqvarna was doing the same thing. B&S engine Wait about 5 mins before starting... There is a flexible gasket in the carb that can become stiff. the carb cleaner will soften it. Hope this solves the problem.

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