Just bought an STX38 yellow deck with a Kohler 12.5 and am having a hard time identifying the engine series number to help in ordering parts. The id sticker has weathered to the point that is unreadable on both the tractor and the engine. I think I have fuel delivery problem similar to a recent thread by 3mowers. I am looking for parts for the fuel system but things are not adding up. My engine has a fuel pump but the research I have done leads me to believe that when yellow decks were made they only had a gravity system. I thought I had a Kohler CV12.5-1215 but I'm told they did not come with fuel pumps. Any suggestions?
Engine ID on STX38
kmiff
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I have to say that these pictures do look like it could be the 12.5 / 9 HP Kohler....somebody probably added the fuel pump ...Whirley...what do you think?
Hey KMIFF...there is a phone# on the air filter ...I would try calling it and see if you can talk to someone who can better help you positively ID the engine...any way...glad it worked out
Hey KMIFF...there is a phone# on the air filter ...I would try calling it and see if you can talk to someone who can better help you positively ID the engine...any way...glad it worked out
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Mark.. I think the engine came from a tractor that had a tank under the seat.. like the LT series.. it may b a 15 HP with the original 12 HP shroud on it.. at one time I had a bunch of the Commands.. I do know that the shrouds will fit each other.. I did a lotta engine swaps on Craftsman tractors that had a bad B&S engine.. my Sabre was one of them.. it got a 12 or a 13 HP.. I even did a swap on my one LT from a 15 to a 16 HP.. that engine didn't have a fuel pump on it.. I put a vacuum one on it.. got the vacuum source from the dip stick tube.. used a spare steel cross over tube to get the gas to the carb..
addin a fuel pump to a engine that had none from factory will put the engine with shavings in the oil gally.. this is a no-no in my book.. the taps should b metric also.. all of the Commands had the mount for the pump in the castin stage.. some were never mounted & left blank..
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read rayjays postin in this tread to see what Kohler did to the Commands..
https://www.mytractorforum.com/12-john-deere-forum/1307003-more-lts.html
https://www.mytractorforum.com/12-john-deere-forum/1307003-more-lts.html
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Both the 9 and 12.5 have same bore, stroke and compression ratio the engine for the 38 is CV12.5-1215
the 9hp on the 30s is a CF12.5-1216S..both at 3350 RPMs ......according to tractordata...I don;t know if the numbers really denote any difference except which tractor it go plunked into....with these critical specs the same..they should both produce the same HP
the 9hp on the 30s is a CF12.5-1216S..both at 3350 RPMs ......according to tractordata...I don;t know if the numbers really denote any difference except which tractor it go plunked into....with these critical specs the same..they should both produce the same HP
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I agree on all of this.. maybe the carbs have a difference in them by less gas gettin thro them..
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