Do you have the Service Manual? With out the manual, you are just on an Easter Egg Hunt and will waste a lot of money. When it quits, can you spray some starting fluid in the carburetor and see if it will fire? If so, you have a fuel problem. If not, you probably have an ignition problem. One way to check that is to remove one of the spark plug wires and place a Phillips screw driver in the plug socket and hold the shank of the driver near the engine metal parts and crank it over to see if you get any spark. Once you determine if it is fuel or spark, you will have a better idea where to check next. I am betting an ignition problem and for that you will need the manual. I have a copy but it is to large to attach here. I can print out the various sections when you determine what sections you need. I can upload the whole manual if you have a Google Drive or OneDrive folder I can have access to.
JD425 stalls when hot
1994 JD425. Runs great,starts great,idles fine. As soon as unit heats up either in full throttle or any power setting it just dies. No backfiring or running rough just like if you turned the key off. Wont start until unit cools down then the same thing happens again. Spent about$ 700.00 in labour costs at JD dealer but they couldnt find anything wrong. Suggested either start replacing parts or wait til it dies completely then bring it back.
Replaced the TDM ( time delay module ) at a neighbors sugggestion but had no impact. Not much of a mechanic, any suggestions as to where to focus my trouble shooting.
Replaced the TDM ( time delay module ) at a neighbors sugggestion but had no impact. Not much of a mechanic, any suggestions as to where to focus my trouble shooting.
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Are you keeping the radiator clean? My 425 was bad about building up debris between the screen and radiator in the lower right corner. It was very sensitive to even a slight increase in coolant temperature, which would make the fuel in the carburetor bowl boil.
After it cooled off, it would run fine.
Blowing out the radiator every day in the summer was very important to keep this from happening.
After it cooled off, it would run fine.
Blowing out the radiator every day in the summer was very important to keep this from happening.
I found it was better to use my garden hose and wash the radiator out from the engine side on my 445. I seems to work so much better than trying to blow it out with compressed air (I have a large Industrial Air Compressor) and had the advantage of cooling of the radiator at the same time. Engine seems to remain cooler a lot longer before I have to re-clean.
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