Go BottomOver heating problem with my F17 Yanmar
 | robert92584
Join Date: Jul 2007 Posts: 1 Scurry, Texas 
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2007-07-18 143844
I am experiencing an over heating problem with my F17 Yanmar Tractor. The motor works fine for about 20 minutes…then it over heats….Is there any thing I can do to resolve this problem. I tried to research this problem…I thought maybe the thermostat was bad…My tractors doesn’t even have one…well at lest one that I can’t find…Then I thought maybe the water pump was bad….Is there really a water pump on this tractor. When I first bought the tractor, I had no over heating issues…now it’s every time I use the tractor…
Can you please help or suggest a repair method.
>
> Thank you!
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 | candoarms
Join Date: Mar 2007 Posts: 1932 North Dakota 
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2007-07-18 143848
Robert,
I'm almost positive that your radiator has a bunch of small debris packed in between the cooling fins.
If you use an air hose and a wand, you'll likely solve your problem in less than five minutes.
If your radiator is clean, please check the small vents surrounding the outer portion of your hood. These vents must be clean to allow for proper air flow.
I use a small parts cleaner brush to clean these vents, and I do it after every mowing. The same is true with the radiator and the screen that sits in front of it. All of these things must be cleaned on a regular basis.
Let me know if this helps.
Joel ....
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 | auerbach
Join Date: Sep 2007 Posts: 2168 West of Toronto 
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2007-09-25 146046
Besides ensuring the air passages are clear, check the fan is working, that your coolant is the right mixture of antifreeze, and that the rad cap is good (or just replace it on spec). If those don't cure, you (or a rad shop) check the rad and power-flush the block's coolant passages. (If the lower rad hose has to come off, and you are using the original fan belt, that's a convenient time to replace it.) ....
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