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 01-09-2003, 18:18 Post: 47235
john pettit
2003-01-09 18:18:04
Post: 47235
 ym1500 running full throttle

after starting tractor it will go to full throttle,we must cut fuel off to slow, stop engine.






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 01-10-2003, 04:20 Post: 47252
TomG

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 ym1500 running full throttle

Sounds like a governor problem. Many governors have weights on pivot points and thrust plates that can seize. The weights swing outward against spring pressure to reduce throttle as engine rpm increases. If the weights are stuck then there's nothing to reduce fuel delivery to the engine. Excessive tension on the throttle link spring (if the linkage was bent for example), a broken cross-drive shaft and maybe a few other things would do the same thing.

There's a fair chance that the governor is the type described above and that some wd-40 and then lubrication on the pivot points could be a cure. You'd probably need a manual to know where to look and for proper procedures, but the fix might be pretty easy. I'd look, but I bet the pump control shaft doesn't move when the hand throttle position is changed.






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 01-10-2003, 04:57 Post: 47256
Art White



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 ym1500 running full throttle

We have a problem in this area where to many people have deluited the fuel with to much Kerosene and set up govenors on injection pumps. The bulk of the pumps require some type of lube from the fuel and kerosene doesn't cut it according to many companies. You definitly have a problem that if it is not external as Tom stated will be internal.






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 01-10-2003, 05:28 Post: 47260
TomG

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 ym1500 running full throttle

By the time I remembered something I forgot and got back here Art already said it.

A check is to disconnect the throttle linkage from the pump control lever and see if the pump shaft moves freely. If it doesn't then the pump has a problem.

I always use fuel additive that contains anti-gel, pump lubricant etc. During the winter I run dyed #1 diesel, which is pretty much equivalent to stove oil. I've never figured out why people would use highly refined and expensive kerosene instead of #1-diesel or just depend on anti-gel additives or that fuel dealers pump an appropriate winter blend for the area.






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 02-08-2003, 08:25 Post: 48877
petwa
2003-02-08 00:00:00
Post: 48877
 ym1500 running full throttle

Am I to infer that No 1 fuel oil, used in home heating can be used as diesel fuel in my Yanmar YM2000?






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 02-08-2003, 09:53 Post: 48880
DRankin



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 ym1500 running full throttle

Absolutely.






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 02-09-2003, 05:01 Post: 48901
TomG

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 ym1500 running full throttle

Just a slight qualification to what Mark said: My oil furnace oil dealer says the diesel and the furnace oil comes from the same tank. That's likely true generally but it'd be good to check. At least in theory you might expect refiners and dealers to take a little more care with cleanliness and storage of fuel intended for diesels. For example, good practice is to buy diesel from fairly high-volume stations. It's possible to get some water from condensation along with the diesel, and furnaces are much more tolerant to water than diesels are.

Around here it's called furnace and stove oil, with stove oil being the lighter. That compares with #2 and #1 diesel respectively. Either can be run in most diesels but #2 produces a bit more power. #1 doesn't gel under most conditions and starts a bit easier. Furnaces also can take either but I believe that different orifices are used. People here who have outside furnace oil tanks generally run stove oil. If there's not a source of dyed diesel nearby, using furnace oil will save some tax bucks.






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Discussion Boards > Active Subjects > Messages as Posted > Yanmar Tractors Forum

Thread 47235 Filter by Poster:
Art White 1 | DRankin 1 | john pettit 1 | petwa 1 | TomG 3 |




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