Psychonova68 36 #1 Posted January 30, 2020 I put my commando 8 back together after an engine rebuild and now it is getting too much fuel. With it just sitting there not running fuel drips slowly out of the front of the carburetor. I had it running the other day and it kept surging, but I was able to throttle it back by choking it. What would cause this and also can someone point me toward a good description on how to tune the carb. It has a Carter 11 or N carb, I can't tell exactly. I did rebuild the carburetor and cleaned all of the jets out with compressed air. I seated the two screws lightly and went to turns out to start, but need more information on what I am doing. Share this post Link to post Share on other sites
ebinmaine 72,727 #2 Posted January 30, 2020 10 minutes ago, Psychonova68 said: I put my commando 8 back together after an engine rebuild and now it is getting too much fuel. With it just sitting there not running fuel drips slowly out of the front of the carburetor. I had it running the other day and it kept surging, but I was able to throttle it back by choking it. What would cause this and also can someone point me toward a good description on how to tune the carb. It has a Carter 11 or N carb, I can't tell exactly. I did rebuild the carburetor and cleaned all of the jets out with compressed air. I seated the two screws lightly and went to turns out to start, but need more information on what I am doing. I've had carburetors I've had to take apart and rebuild two or three times before I got them quite right. Your issue is that the inlet needle is stuck open. You need to take the bowl off and clean out the needle and seat below the float. If you didn't already do so, replace the needle and seat. If they are new, you should be able to just clean that carburetor over again and quite possibly solve your issue. 4 Share this post Link to post Share on other sites
Roger R 459 #3 Posted January 31, 2020 check the condition of the float. I have seen the composite ones get completely water logged (gas logged), or the brass floats can develop a leak and get flooded. If a float won't float the needle valve will not close causing the described condition 1 Share this post Link to post Share on other sites
The Tuul Crib 7,339 #4 Posted January 31, 2020 One more thing is put a fuel filter on it . There could be some debris in the tank as well Share this post Link to post Share on other sites
67 WH 877 62 #5 Posted January 31, 2020 Running on choke is a clogged jet, flooding stuck open...I rebuilt mine, ran fine for a bit then like crap, dropped the bowl and it was full of jelly from the fuel pump. Share this post Link to post Share on other sites
ebinmaine 72,727 #6 Posted January 31, 2020 10 minutes ago, 67 WH 877 said: full of jelly . Gotta love the ethanol.... 1 Share this post Link to post Share on other sites
67 WH 877 62 #7 Posted January 31, 2020 Just now, ebinmaine said: Gotta love the ethanol.... No kidding...Whos idea was it to put that garbage in our fuel! 1 Share this post Link to post Share on other sites
ebinmaine 72,727 #8 Posted January 31, 2020 4 minutes ago, 67 WH 877 said: No kidding...Whos idea was it to put that garbage in our fuel! I'm VERY lucky to have a station nearby that sells E free.... But I digress ... Share this post Link to post Share on other sites
67 WH 877 62 #9 Posted January 31, 2020 1 minute ago, ebinmaine said: I'm VERY lucky to have a station nearby that sells E free.... But I digress ... Looked for a station here in Mo, found one about 60 miles from my location... Share this post Link to post Share on other sites
67 WH 877 62 #10 Posted January 31, 2020 2 minutes ago, 67 WH 877 said: Looked for a station here in Mo, found one about 60 miles from my location... I do use Ethanol remover and add a little Mystery oil...so far so good. Share this post Link to post Share on other sites
ebinmaine 72,727 #11 Posted January 31, 2020 2 minutes ago, 67 WH 877 said: Ethanol remover Haven't heard of one.... Care to share? Share this post Link to post Share on other sites
67 WH 877 62 #12 Posted January 31, 2020 1 minute ago, ebinmaine said: Haven't heard of one.... Care to share? Lucas Safeguard...Guess it be considered more of a ethanol conditioner/stabilizer than a "Remover" 1 Share this post Link to post Share on other sites
Psychonova68 36 #13 Posted January 31, 2020 Thanks for the advice. I'll take the carb off tomorrow after work, that'll be my Friday night fun. 1 Share this post Link to post Share on other sites
ebinmaine 72,727 #14 Posted January 31, 2020 7 hours ago, Psychonova68 said: Friday night fun I like that spirit...... Share this post Link to post Share on other sites
Jayzauto 89 #15 Posted February 2, 2020 While you had the carb off, for cleaning, did you set the Float Height?? As well as making sure the float isn't heavy..... And the needle and seat being clean. GLuck, Jay Share this post Link to post Share on other sites
Psychonova68 36 #16 Posted February 3, 2020 I set the float level and just to make sure the jets were all clean, blew them all out. I noticed the needle from the rebuild kit was different than what was originally in it, so I just put the old needle and fitting that in goes in back into it. I got it running, but then started worrying about carbon buildup from running choked and the spark plug was completely black and I imagine the inside of the combustion chamber is too. I'm going to take the head off and clean it up. Also discovered the set screw for the shifter was broken, but luckily was able to spin it out with my fingers. 1 Share this post Link to post Share on other sites
ebinmaine 72,727 #17 Posted February 3, 2020 1 hour ago, Psychonova68 said: . I'm going to take the head off and clean it up Wouldn't hurt to hand mill the head on a piece of sandpaper and glass while you've got it apart. Share this post Link to post Share on other sites
Psychonova68 36 #18 Posted February 3, 2020 What grit sandpaper should I use for that? Share this post Link to post Share on other sites
953 nut 60,083 #19 Posted February 3, 2020 This Kohler engine service manual will give you the information needed to setup your carb. kohler service engine manual_NEW.pdf Kohler service manual K91 K141 K161 K181 K241 K301 K321 SM 1972 (1).pdf Share this post Link to post Share on other sites
ebinmaine 72,727 #20 Posted February 3, 2020 1 hour ago, Psychonova68 said: What grit sandpaper should I use for that? I do it in three or four stages. Get a known true flat surface large enough to tape the sandpaper on the four corners. You can start with 120 or 150 grit. I only use that for a few rotations or figure eights just to see where the highs and lows are. Switch to something like 220. To finish it up you can knock it into the 300 but I usually end at 400. You can either do figure eights or a straight back and forth motion. If you do a back-and-forth motion you need to turn the head 90° every few strokes. This ensures you will get a level flat head and not have one side a lot lower than the other. Share this post Link to post Share on other sites
Psychonova68 36 #21 Posted February 3, 2020 I went to start working on it and saw a pool of gear oil, so I gotta start on the tranny asap, I didn't realize the seals were that bad. I did clean the spark plug with some brake cleaner and she started right up, ran what fuel I couldn't siphon out, out of her. Thanks for the help guys, I'm sure I'll have some questions once I start tearing into the tranny. Got it off in only 4 beers. 2 Share this post Link to post Share on other sites
ebinmaine 72,727 #22 Posted February 3, 2020 Haven't ever try to remove transmission hubs use great caution. They can be a bit ... entertaining... To remove. Best to use an old hub to remove them and not a 3 jaw puller. Share this post Link to post Share on other sites
953 nut 60,083 #23 Posted February 4, 2020 15 hours ago, Psychonova68 said: saw a pool of gear oil, so I gotta start on the tranny asap, I didn't realize the seals were that bad. As @ebinmaine said, hubs can be a challenge and will break if not done properly. The seals may be the only problem, or the axle bearings could need replacement also. Jack up the rear of the tractor and try to move the rear axle front/back and up/down. There should be no movement, a little in and out movement is fine. 1 Share this post Link to post Share on other sites
ebinmaine 72,727 #24 Posted February 4, 2020 4 minutes ago, 953 nut said: a little in and out movement is fine I meant to ask about this the other day. Thanks for bringing it up. Is there a spec amount of acceptable play for an average 8 speed? Share this post Link to post Share on other sites
pfrederi 18,689 #25 Posted February 4, 2020 about 1/8" 1 Share this post Link to post Share on other sites
