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Tractor Talk Discussion Forum

1950 WD9 International Diesel engine

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Dalton06

10-14-2006 17:31:17




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Can someone please tell me the procedure to start this old hand crank engine? It has a gasoline pony engine and a diesel engine. When you crank it, it coughs a little. Is there a secret to starting the gas engine?




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steelfronts

10-16-2006 19:27:53




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 Re: 1950 WD9 International Diesel engine in reply to Dalton06, 10-14-2006 17:31:17  
To start it you have to know the procedure. Put throttle in stop position. Move compression relief lever into start pos. Turn on the fuels. Once started and warmed up about one and one half minutes move the compression relief lever in to diesel and advance the throttle. Thats how its supposed to go and it will if you have good sparked timed right , the carb is clean and the plugs are good and the linkage is all free so the starting valves close and the butterflies in the manifold close which also shuts off the gasoline and spark. Get everything right they start very easy in all weather and I mean easy with a hand crank one or two pulls.

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old

10-14-2006 19:41:23




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 Re: 1950 WD9 International Diesel engine in reply to Dalton06, 10-14-2006 17:31:17  
As paul says its not a pony engine but and engine in an engine so to speak. You have to make sure you have a brite blue spark and that the impulse on the mag is working right. Also that carb has to be just right or it will not start. Shoot even with a 12 volt starter on them they can be a pain to start. I had a TD-6 which is an engine like that one and it could be a pain to get running. I do still have the manul for it if any thing from it would help I could send you starting preceders if you drop me an e-mail on it. Can't say if it will help or not. Those engines where also bad about cracked heads and burned valves in the gas side of the engine and either one or both can cause starting problems also

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Paul Janke

10-14-2006 19:15:07




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 Re: 1950 WD9 International Diesel engine in reply to Dalton06, 10-14-2006 17:31:17  
Somebody else can correct me if I am wrong, but I believe this does not have a pony, which is a separate engine. I think this is one of those which starts on gasoline and then the same engine switches to diesel. This is accomplished by decreasing the combustion volume which increases the compression ratio and pressure. That being the case, starting consists of moving the gas/diesel running lever to gas, turning on the gas, and starting as any other gas engine. As near as I know there is no throttle in this mode. Engine speed is controlled by the use of a carburetor which is too small to allow enough fuel/air mixture for the engine to run at anything above an idle speed. After the engine warms up, the lever is moved back to the diesel mode, the engine slows some, and then it belches much sooty smoke, stumbles some, and takes off on diesel power.

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T.K. in Pa

10-15-2006 09:17:01




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 Re: 1950 WD9 International Diesel engine in reply to Paul Janke, 10-14-2006 19:15:07  
you got everything right on this one. got a TD9 dozer,takes longer to get it started then it does to do the work.



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