He couldn't see it by looking in the tank but drained the tank and found it that way. One last thing, one forum reply indicated someone found a small piece of plastic in the fuel tank that was periodically covering up the outlet for the fuel line. But he didn't offer anything new beyond suggesting I change out the carb for a new one. I did finally contact Kohler Engine (the 2135 has a 12hp OHV Command) to see if they were getting any similar reports - and after 2 months, I got a call from my local Cub dealer serviceman. Although just to cover all my bases, I have been adding a little Techron fuel injector cleaner each time I fill up the fuel tank the last month or so.
I've been advised to change the carb and just put a new one on although the fact that it runs perfectly for at least an hour in warm weather or longer in cold weather doesn't seem to me to be something that matches a dirty carb problem. Also replaced the fuel line clamps with the small stainless screw-type clamps but have not yet replaced the flexible fuel line itself. I also have already replaced: ignition coil, rebuilt carb, changed Fuel,Air filters, Oil & Tranny fluid/filter, spark plug. The problem seemed to appear most often when mowing a slight uphill grade or when mower was under load cutting high grass but the heat build-up seemed to be the common factor.
was 90+ did it stall out and I couldn't get it started but after it cooled, it started right up. Then once she recovered, I could mow a while longer, maybe 5-10-15 minutes before I'd have to repeat the process of disengaging the mower blades and playing with the choke - pulling it out about half-way to keep it running. Typically on a warm or hot day, I'd mow an hour and then have to start playing with the choke to keep her running. Now that our outside temp is 70 degrees or less, I've mowed a couple of times with absolutely no problem mowing, as recently as last night for over 2 hours. I've arrived at some conclusion that the accumulated heat build-up after an hour or so operation time is related to the problem - though I don't know how exactly. other than that, your description is identical. The only symptom I don't have is the 'surging'. It would have been very costly to have a mechanic tear down to repair or replace hydraulic lifters or what else he would find, so I am happy!.Īs you commented in your initial post, I'm one of the other posters reporting a very similar problem with a 19. My thinking is that it had to do with hyd lifters being gummed up and not functioning, and the hi tbn oil and varnish cleansing product slowly cleaned the engine so it could work normal. I mow approx 2 to 3 acres and it will do 2 to 3 hours and not fail now. Now, after about 2 months it seems to run normal. The time started getting longer each time. At first it would go a short time and die again. It took a month to get to running better. I drained oil, installed Amsoil 4 stroke small engine oil, put on a new Napa oil filter. I noticed that oil filter was an inexpensive brand and assumed the oil was also(changed before I bought so it looked clean). checked vent on gas cap, changed gas, blew out fuel line, no help. I,read of several similar problems on here, talked with a small engine mechanic and started some actions. It would always restart and run until put under load. A month of use and the Kohler courage 20 Hp started losing power and sputtering and then backfiring. I will tell my story as some of you have described similar troubles, I purchased this CC LT 1045 with 42" cut, used, last spring.
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