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  1. F150Fan80

    Kohler CH740 power issues.

    I am ok with going through the carb again. I did a rebuild kit on it as well. This was before I found the compression issue. It still persisted. I am always game for trying to clean it again.
  2. F150Fan80

    Kohler CH740 power issues.

    So I was finally able to test the muffler of sorts by stuffing a rag in one inlet and then inserting a rag and compressed air nozzle into the other to see how much air was actually leaving the muffler. I also reversed the inlets and tried again. It really didn't seem like there was much of a...
  3. F150Fan80

    Kohler CH740 power issues.

    Not a whole lot at all. Basically I've ran it for about 20 minutes give or take. Probably a little more. I figured It would be a little better now. It seems like the issue I was having in the beginning is still present, even with the low compression that was originally found. Perplexing issue...
  4. F150Fan80

    Kohler CH740 power issues.

    I used a three-legged hone with the spring action on the arms to hone them out. It's done well for me in the past but maybe not in this case.
  5. F150Fan80

    Kohler CH740 power issues.

    So it appears that I still have low compression although not near as low as it was. One cylinder was at 130 and the other is at 140. Note that this is found on a cold engine. I have yet to perform a leak down test but I am relatively sure that it is leaking through the valves since I have brand...
  6. F150Fan80

    Kohler CH740 power issues.

    I'll start with the compression check and go from there. I have a leak down kit as well if the test shows low. My bet would be a leaking valve, possibly not seating correctly. I'll hopefully be able to run a compression check tomorrow after work. It does seem to be running on both cylinders.
  7. F150Fan80

    Kohler CH740 power issues.

    I can try doing another compression test and seeing what it shows. If it shows low then a leak down test would be next. If I was losing compression again I would bet the valves aren't sealing properly since it's been honed and new pistons and rings. I'll know more later this week. It seemed to...
  8. F150Fan80

    Kohler CH740 power issues.

    Well I am finally back from sledding in northern Wisconsin. Love it up there. Anyway, anyone have any thoughts on this? I am looking into getting back out to look it over within the next couple of nights. Hopefully someone has some insight for me. I feel like I am missing something here. I just...
  9. F150Fan80

    Comparison Keep my Grasshopper 727K2 or...

    I have a blacktop drive that is pretty beat up from the previous owners/tenants that lived here before we bought the house. I'm actually surprised that the turf tires do that well in snowy situations. I have the bar tread but thought about going to turfs to help keep me from tearing up the grass...
  10. F150Fan80

    Comparison Keep my Grasshopper 727K2 or...

    Those pics actually came through really nice!! Thank you!! I really like that idea of the rubber matting. Does it direct most of the snow to the auger instead of passing underneath to the tires? Also, what size tires are you using? I'm wondering if the tires I have are a little wide. I bought...
  11. F150Fan80

    Kohler CH740 power issues.

    Well, I know that it has been a long time since I updated anyone on the progress made. Between work, sick kids, sick adults, Christmas, getting ready to go snowmobiling, etc, I haven't had much time to dedicate to getting this thing running. Let me rephrase this, running well. It does in fact...
  12. F150Fan80

    Kohler CH740 power issues.

    :ROFLMAO: On a more serious note I almost forgot to. But I followed the manual for torque specs!! ?
  13. F150Fan80

    Kohler CH740 power issues.

    I wasn't able to fire it up yesterday, that will be today. Fingers crossed!!! I did however get everything mounted back up and wired. It's sitting in the shop right now waiting for me to try and start it.
  14. F150Fan80

    Kohler CH740 power issues.

    Well I finally have the engine all back together. Finding time to get back to it has been hard. I ended up using a 6 prong trailer connector to redo the engine to tractor wiring harness connector. Since there are only four wires used now I just eliminated two of them. I chose this style of plug...
  15. F150Fan80

    Kohler CH740 power issues.

    So, if you all remember I was going to replace or repair that electrical connector from the engine to the tractor. I am looking for a replacement connector and cannot find something that is very suitable for it. I would like something that is snug and weather-tight as well. Does anyone have a...
  16. F150Fan80

    Comparison Keep my Grasshopper 727K2 or...

    What tires are you currently using?
  17. F150Fan80

    Comparison Keep my Grasshopper 727K2 or...

    Thank you for the replies!!! I had a couple leads on a 60" but lost those. I'll keep my eyes open on Craigslist and Facebook. How is traction with your machines in the snow? I have the bar tread tires and don't remember having good traction with them in the snow. I had the more narrow blade and...
  18. F150Fan80

    Kohler CH740 power issues.

    All, It appears that all the parts I had ordered arrived today while I was at work. I may get a chance tomorrow after work to start but more than likely it will restart on Monday. Can't wait to get this thing back up and running strong again.
  19. F150Fan80

    Kohler CH740 power issues.

    Yup!! The hone will definitely be coming out! I did manage to get some time to go out tonight for a little while and what I found actually surprised me. Here are some pictures of what I found after I removed the flywheel. Needless to say I wasn't very happy. It appears as though the shaft seal...
  20. F150Fan80

    Kohler CH740 power issues.

    ILENGINE, can you tell me which style pistons I have? I think that via the parts diagram I'm looking at now they look like both. Lol
  21. F150Fan80

    Kohler CH740 power issues.

    Here are more pictures. Hopefully these help some.
  22. F150Fan80

    Kohler CH740 power issues.

    Hopefully this picture helps. I just put these on and they have only been used for roughly ten minutes. Basically brand new. Here are some pictures of each piston and the jug they came out of. I haven't tried to put a ring back in each as of yet. I hope to try that later tonight if I don't...
  23. F150Fan80

    Kohler CH740 power issues.

    So I recently started working midnights and haven't had much time with the engine. I did get lift it out of the mower (by hand :frown:) and set it up on the bench. I started tearing it down by removing all the shrouding, plates, muffler, throttle control, etc. It's finally ready for me to pull...
  24. F150Fan80

    Kohler CH740 power issues.

    Never thought of that. It was snug in the hole but not as tight as I would have thought. Maybe it wasn't sealing. That side had the best compression during the test. I have the oil draining currently. Once it's done draining the engine is ready to be lifted out and on to the bench. I did happen...
  25. F150Fan80

    Kohler CH740 power issues.

    No screws have fallen off the carburetor. I have had it off a couple of times in the last two weeks and they are all there. As far as the lean condition I would have to agree. I have never adjusted this on the carburetor since owning the machine. The adjustment is behind an aluminum plug that...
  26. F150Fan80

    Kohler CH740 power issues.

    So I got to the leak down test. Warmed up the engine for about ten minutes. I ended up taking the valve covers off to help find TDC on compression. Good news is that it seems like the valves are sealing decently. Bad news is it appears that the rings are worn. Looking at a complete rebuild at...
  27. F150Fan80

    Comparison Keep my Grasshopper 727K2 or...

    Hey everyone!! I'm trying to figure out what I would like to do with my current setup. I live in the I80 corridor of IL. I have about 2.25 acres that I mow for my lawn. I have a Grasshopper 2007 727K2 with a manual adjust 61" front mount deck. I use a 2009 Polaris Ranger with a steel cab and a...
  28. F150Fan80

    Kohler CH740 power issues.

    Well my first real post on the forum, here goes. I have a Kohler Command Pro 27 (according to the carb cover anyway) that has a loss of power at speed. I know, not a another one. Lol. This is a CH740-0037 Morridge engine with serial number 3631007811 and a build date of 11/6/2006. This is in a...
  29. F150Fan80

    New to the forum

    Hello all. Been searching the forums and finally decided to join. Looking forward to learning!
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