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  1. #1
    Super Star Member brin's Avatar
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    Georgia - Mt. Vernon by The Store just 5 miles east and right by the big oak tree then to the creek.

    Default My Murray Lawn Tractor....won't restart when hot ????

    I posted here since I figure MTD must make Murray Mowers, they make so many others, anyway....I was out cutting my grass this morning with my 20 HP , 46 inch cut Murray Lawn Tractor and realized I was getting low on gas....so knowing I would not be able to restart it I went to the shop for gas...turned it off, filled up on gas and sure enough..it turns over but no spark so it does not even try to start...just turns over without a pop...this has happened before ...So I had to wait a full hour until it cooled down and it started right up.

    Does anyone know why it does this and what I can do to fix it so I don't have to wait and hr. when I need to stop for a minute....?

    Thanks
    Bob

    WORRYING does not take away tomorrow's TROUBLES, it takes away today's PEACE.


    NH - TC-29 , FEL, Bush hog, Bush hog brand finishing mower, Post hole digger, 6' Back blade, sub-soiler, Pallet forks, 20KW PTO Generator , 21 hp Murray Mower
    JD -3020 with FEL and a 16 HP. K-Grow Lawn Tractor (bought from K Mart 1994) and runs great !
    Clark 130 EN Mig Welder

  2. #2
    Platinum Member Zork's Avatar
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    Dec 2003
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    Virginia
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    '04 Branson 3520, '51 Fergy, '96 MTD 18/46, '02 Craftsman GT5000/48

    Default Re: My Murray Lawn Tractor....won't restart when hot ????

    Did you get it fixed? I find it odd that you do not have spark after a low fuel issue. Generally, no spark occurs when the magneto/coil gets hot and is failing or maybe due to a hot soak when you shut her down. Make sure your cooling fins are clean and maybe pull the flywheel and clean the crankcase under there, and the coil area. I recently serviced a 19hp that had all kinds of debris under the flywheel; it had to add to the overall temperature.
    He who is full loathes honey, but to the hungry even what is bitter tastes sweet.

  3. #3
    Elite Member
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    Apr 2012
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    Somewhere USA
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    My tractor is an old

    Default Re: My Murray Lawn Tractor....won't restart when hot ????

    Quote Originally Posted by brin View Post
    I posted here since I figure MTD must make Murray Mowers, they make so many others, anyway....I was out cutting my grass this morning with my 20 HP , 46 inch cut Murray Lawn Tractor and realized I was getting low on gas....so knowing I would not be able to restart it I went to the shop for gas...turned it off, filled up on gas and sure enough..it turns over but no spark so it does not even try to start...just turns over without a pop...this has happened before ...So I had to wait a full hour until it cooled down and it started right up.

    Does anyone know why it does this and what I can do to fix it so I don't have to wait and hr. when I need to stop for a minute....?

    Thanks
    Possibly the coil getting hot and opening up. Also try pulling the flywheel to see if rust has built up on it. After removing the flywheel clean up the outside with a fine grit wet/dry sandpaper and clean the magneto the same way. Take a piece of paper when re-installing the flywheel to set the clearance between the flywheel and the magneto. If there is the least bit of rust on it either it will be hard to start when hot. I had a nice new TSC my son was using and he left it outside alot. Finally it wouldn't start or was hard starting. It took about an hour to clean it all up and afterwards starts like new again. You will need a flywheel puller it you don't have one which will made the job easier or alot of patience tapping the lower side of the flywheel with a hammer and turning and tapping, so forth to loosen it. If the little shaft key is the slight bit notched or damaged in any way ( soft metal key that aligns the flywheel on the shaft) then replace it. That is critical.

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