thanks for the ideas! i'll check the parking brake, return line thing. as far as rpm's, the dealer told me to keep it on that "mark" on the rpm display. obviously, when you start it, it seems way to much--and smoke billows out the exhaust. my old tractor had a stack so i never much noticed if smoked too much. i get the feeling that i don't have the hang of the hydro yet because i lug down the rev up, etc. i've used a tractor on my 10 acres for 12yrs but i don't know much about them(i ruined my kubota l2950) don't know if i should admit that or not. and it may not be using too much fuel, but i bought it new last fall, didn't use it hardly at all for the first 6mo's
Oil & Fuel new kioti dk45 hst guzzling diesel
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Dmace
Elite Member
The only time I run my tractor at "the mark" is when I am running the snowblower or any other 540 rpm 3pt attachment. That is what the mark is for, it tells you when the rear PTO is at 540rpms. For loader work, I run it at around 2000-2200rpms and for backhoe work 1800rpms. This is of course on a CK20HST so your settings may differ but probably not by much.
okay, that makes sense--but i will say when i have the rpms down, and press the hst pedal all the way down, it lugs down--in fact, when i'm in high going from one place to another, if i go up a hill(not a steep one) it lugs down really fast, even when i'm on the "mark" also, when you start your tractor, where do you have the rpm's?
Dmace
Elite Member
When I start my engine cold I crack the hand throttle just a little (1/2" maybe) and it idles just above low which is about 1200 rpms. When warm I start it with the throttle all the way down which is around 900rpms if I remember correctly. Also, don't think of the HST pedal as a "gas pedal" like a car but more like a "transmission pedal". The more you press down on the pedal the higher the gear you are in. For example, barely pushing the pedal down enough to move is 1st gear while pushing the pedal all the way to the floor is like 5th gear (more like 500th gear with an infinite ratio transmission like a HST). This is the reason for the bog, try taking off in your car in 5th gear from a stop or climbing a hill in high gear. If you start lugging the motor, then let up on the pedal a little and also travel in 2wd whenever possible. With a new tractor you will notice a big horsepower increase after 50-100 hours of use as the engine breaks in. I know I did!
Gittyup
Elite Member
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HST's when under travel should always be at or near PTO rpms. This has been discussed before here, about providing enough hydraulic pressure for the tranny to work properly.
What the others have said still holds though: more power with less pedal.
But, your fuel consumption combined with lack of power points to something else, like maybe the brakes or something. But, there could be a problem. I'd have the dealer look at it before you break something.
What the others have said still holds though: more power with less pedal.
But, your fuel consumption combined with lack of power points to something else, like maybe the brakes or something. But, there could be a problem. I'd have the dealer look at it before you break something.
steve0413
Silver Member
I also have a new (as of April) DK45se HST and have noticed that it consumes a lot of diesel. I haven't checked it as far as gal/hr but can easily tell that it consumes MUCH more than my Mahindra 35 hp and more than I expected. Part of the problem is the small tank (8 gal). That alone makes it seem to use lots of diesel. I have 47 hrs on mine and am expecting (hoping) the fuel economy to improve over the next 50 hrs. I generally run it 1800-2200 rpm depending on what I'm using it for. I have been told to run it at higher rpm as that's best for hst but it's hard to listen to all that fuel being burned. 
warhammer
Gold Member
A DK45SE HST has an 11 gallon tank I believe.
Fuel consumption varies widely with what I am doing.
When I mowed a 25 acre field last year and spent hour after hour at pto speed it went through some diesel.
When I am using the PHD or some other lower rpm job I get a couple of weeks of use out of a tank full.
Warhammer
Fuel consumption varies widely with what I am doing.
When I mowed a 25 acre field last year and spent hour after hour at pto speed it went through some diesel.
When I am using the PHD or some other lower rpm job I get a couple of weeks of use out of a tank full.
Warhammer
I also have a new (as of April) DK45se HST and have noticed that it consumes a lot of diesel. I haven't checked it as far as gal/hr but can easily tell that it consumes MUCH more than my Mahindra 35 hp and more than I expected. Part of the problem is the small tank (8 gal). That alone makes it seem to use lots of diesel. I have 47 hrs on mine and am expecting (hoping) the fuel economy to improve over the next 50 hrs. I generally run it 1800-2200 rpm depending on what I'm using it for. I have been told to run it at higher rpm as that's best for hst but it's hard to listen to all that fuel being burned.
Dmace
Elite Member
MotorSeven
Elite Member
Stwyatt, my DK40se burns a little over a gal per hr. As far as the rpms, I almost always run mine between 2200 & 2400....hyros love rpms. When running own the road from one field to another I put it right on the high rpm line(2500) and minor hills are no trouble in high gear. Don't be shy to use your rpms.
Fuel mileage will improve as the engine breaks in.
RD
Fuel mileage will improve as the engine breaks in.
RD