John Deere STX38 Carb Removal and Service. The 12.5 kohler engines was having problems idling so I decided to remove it and give it a clean and service. The video shows how to remove it and dismantle the carb on the bench.
Just finished cleaning the carb on stx38. This tutorial really helped. Now, I hope this fixed the problems I had been having. She started right up and seems to be running smoothly. Time will tell whether I need to investigate further. Thanks!
***** Glad it was of help. Let me know how it works out. Those little carbs and leaving fuel in them over winter really kills them. I try and drain them if I remember each year. That seems to really help. Thanks for watching!
Hi: Thank you very much for your insightful video. I've watched it a few times and then decided I would try to repair my own carb. Your instructions worked like a charm and the machine is now running fine and I just mowed 1 acre of grass. Now all I have to do is find the oil leak! Thanks again
1080 is not too bad. The Kohler engine is a good engine. I just fixed my fathers 25 years old Whellhorse(Toro) tractor. It also has a Kohler 12,5 hp engine. The starter was worn and wouldn't work anymore. I bought a new original starter via Ebay in Germany. I took a half an hour to fix and tractor runs like new again. Its the only thing that we have ever fixed on that engine. A little tip. Those studs will keep getting loose every time you loosen the nut. Give the end that's goes into the engine some Loctite and it will stay in the next time.
I have a stx38 that is 27 years old. I never had any problems until now. It doesn't want to start. I've changed the fuel solenoid, a new battery, I sprayed carb cleaner in the carburetor, I removed all of the old gas and blew air through the fuel lines and also changed the fuel filter. And it still doesn't turn over. So I'm going to try removing the carburetor like you did and clean it. I just have to remember to keep track of how many turn of the mixture screw. Wish me luck!
Alphonso Anderson Hey Alphonso, make sure you test the spark by pulling the plug and shorting the plug body against the engine block of the tractor with some insulated pliers. Then get someone to crank the motor. Look for a good clean spark across the gap. Gap should be around 0.030". I've also seen the float in the carb stick with old gas residue (red goop looking stuff). And I wish you the best of luck!! Let us all know how it went!
Thanks for uploading this video. This is just what I was searching for. I am working on a John Deere R72 that will not stay cranked. This is the ticket I believe. Subscribed.
Thanks Jasper, I should have loctited that stud, good idea. The engine seems pretty good now, shame they don't use hour meters on those tractors but I should do a compression test anyway. Those Wheelhorse tractors are built STRONG they are very nice. :)
Thanks for the video! Any additional videos showing other STX38 stuff? I'm having issue with my mower deck gouging my lawn in certain instances. Would love to make sure it's level and know how to fix that.
I'm afraid I don't. I tend to buy small tractors to fix and sell them for fun (and a bit of cash). I would look at the deck hangers though. They normally adjust the level of the deck by means of a nut on a threaded rod. Best of luck!
Dude I need your help I have an stx38 and the spring from the throttle cable came off and I don't know where it goes. Can you please help me send me a pic of the back of the throttle cable assembly please
As long as the fuel solenoid is working you should be fine. The ground cable is probably used in my example as the solenoid might be insulated via a rubber gasket or O ring. 👍
PSA, don’t do what I did and overtorque the fuel shutoff solenoid. I stripped that bolt and caused a crack in the carb. Totally ruined it and had to get a replacement
Excellent tutorial, although I am concerned by the amount of harsh, cancer causing chemicals you are exposing yourself to. I would at least wear some protective gloves.
