turning up the fuel on a ck27

[thepumpguysc]

Go back to page #1.. Post #5.. & watch the video..

 

[pmsmechanic]

Here's the link Motorman Matt: Kubota Diesel Mower - YouTube. It gives the general idea but doesn't give specifics like how much to turn the screw out. There are a few more video's of the same nature that show up but I didn't watch them.

 

[tman1020]

Man if that's a good example of what to expect no thanks! I have never heard or seen a Kubota run like that.

 

[pmsmechanic]

Man if that's a good example of what to expect no thanks! I have never heard or seen a Kubota run like that.

The sound of the engine is not because he turned it up. That is what a small two cylinder diesel sounds like. As soon as I heard it I thought to myself that's why most of Yanmars diesels are three cylinder.

All he did was turn the screw that lets the governor inject more fuel at full throttle. It's not going to change how the engine sounds. And the engine will only see full throttle when the governor opens the rack all the way up. That happens when it's accelerating (hence the black smoke) and when it's actually working to full capacity. So it will smoke a bit more when you are pulling full horsepower out of it. It you modified the air intake system to add more air when more fuel is added then there would be no smoke.

 

[thepumpguysc]

Yeah, it looks like Matt went "alittle" overboard w/ his fuel. lol
IF your serious about turning it up, just look at the screw, turn it 1 full turn, one way or the other, and see what you get..
If its too much or not enough, turn it back a 1/4 turn at a time till your happy.. its not rocket science fellas.. its a screw..

 

[mike69440]

Yeah, it looks like Matt went "alittle" overboard w/ his fuel. lol
IF your serious about turning it up, just look at the screw, turn it 1 full turn, one way or the other, and see what you get..
If its too much or not enough, turn it back a 1/4 turn at a time till your happy.. its not rocket science fellas.. its a screw..

I turned up my L39 Kubota.

There is not a lot of gain being N/A non turbo, but maybe I got 5% more torque plus 1-2 HP judging from how it climbs the hill in our driveway.

 

[Phil48]

Yes they can be turned up. if you search utube. motorman Matt> Kubota Diesel Mower vid.
The adjustment screw has a TAMPERPROOF CAP on it for a reason..
but can quickly be removed w/ a Dremel tool and a slit cut in it lengthwise and pryed off.
Good luck and don't hurt yourself.

Two weeks ago, while I was talking to my Kioti mecanic about my CK20 he suggest to "pimp it": "you could go from a 20hp to 23 or even 24hp!?!" It' s now a 5 year old, (no more waranty to be void) and could use more power - it's true! So he did exactly what you said in your post: dremmel air tool cut off protection cap, and unscrew.

The added power is very significant but the is no visible black smoke - I guess we did not go that far... It does eat up more diesel and is way more efficent. Nobody will get me to unscrew it!

He did also pimp the hydro restriction valve for the foward speed(low gear). He removed the spirng /screw valve assembly and tack welded the spring on the new more open position. It's less restrictive and now allowed a 1000lbs pression increased. The CK20 is a bit slow in low gear, but now I dont have to always stick the pedal to the metal!

It now stronger and faster! He's being doing that procedure for a number of year now - no problem so far!

 

[thepumpguysc]

Congrats.. Nice to hear a success story.. 7 pages of "discussion" over a turn of a screw.. crazy..

 

[Ken Kegris]

Hi guys I am from central PA I have a ck 25 and a ck2510 and i have turned up the pump on the CK 25 and yes you get more power I have access to a dyno and I went from 24.7 HP to 32 HP It really smoked when under a good load, It also made the paint burn off the stack so I screwed the screw in to 27 HP and the tractor works fine. I run a 15 K power plant and it has enough power to get the full 15 k out of the plant. the only problem is the Governor drop which is 200 RPMs under full load it will pull down 200 rpm and the governor will hold at that which screws up the cycles and voltage and bumping up the throttle will work fine until the load drops then you have to lower RPMs pain in the but. but it will carry full load. I have used this on the 1000 rpm and the problem is worse except this works well when we are not asking for the full 15k load. No on to the CK2510 it works better on the power plant because the gov drop is around 25 to 50 rpms Now this is a 24.5 hp engine with out computer controlled injector pump. Its actually a 35 HP engine detuned to 24.5. They turned the screw in and still could not meet the emission standard so they brought the max speed to 2600 rpm which is also the red line for the pto the CK 25 runs at 3200 rpm. Now with a shim removed from the timing at the pump I can get 37 out of the engine with also adjusting the screw. The first CK2510s were computer controlled but Kioti found out it was not needed so they took it off the newer ones which mine is. I also no longer have glow plugs they have air intake heaters, using the same principle as the glow plugs as far as the electrics go. the CK25 is gear drive and has been a good tractor and I have a 1000 hrs on the meter. I also had a 2410 which was more of a mower but had the features of the bigger tractor, was not a good tractor for me as it was always broke, so that hoe the CK 2510 came to be. which has been a disaster so fay the first round mowing in the yard I got stuck the FWD was not going in gear so 6 weeks later and many problems getting the parts I have the tractor back now at 50 hours the injector pump developed a leak its a 1000.00 part and is under warranty, Here we are a 50 hours and we are have 2 major issues with this tractor. I have a mmm and I installed the larger Ag tires and boy did that screw thing up all the mower geometry was off. I had to machine new pcs for lifting the deck the tires hit the deck. So I cant raise it up as you could with the borrowed turf tires. I had to make my own brackets to mount the mower on the tractor. It was supposed to use the FEL brackets which I did not get because I did not buy the loader. Kioti does not make separate brackets for my application. What a nightmare I will be running it in two weekends from now for 3 days straight at our tractor show for power with a leaky injector pump, this could get good. Their fuel tank placement leaves a little to be desired cause i need to fill for those 3 days with a five gall can, so I can see fuel being spilled all over the place. At home I have a pump. Well if I can be of help to anyone let me know at kkegris@yahoo.com by the way I am very good friends with my local dealer who is five mile away.

 

[dfkrug]

Hi guys I am from central PA I have a ck 25 and a ck2510 and i have turned
up the pump on the CK 25 and yes you get more power I have access to a dyno and I went from 24.7 HP
to 32 HP It really smoked when under a good load, It also made the paint burn off the stack so I screwed
the screw in to 27 HP and the tractor works fine.

Please describe running the tractor on the dynamometer. Were you running AG tires on the rollers?

 

[mike69440]

Please describe running the tractor on the dynamometer. Were you running AG tires on the rollers?

PTO Dyno water brake.

 

[Ken Kegris]

I have ag tires on the tractor, but on a tractor you Dyno with the PTO shaft. In 540 RPM I was at 27.5 HP and in the 1000 running at 540 it was 17 HP something. Most of the older Dynos can only be used at 540 RPM's they use water for the load. What i did was started slow and raised RPM to I got to the 540 RPM mark and then the operator loaded me and I increased RPM to where i was I was maxed out and that was 17 HP. Any more questions let me know I will do my best to answer them I have a personal relationship with my Kioti dealer. Kenny

 

[hillwood]

I have ag tires on the tractor, but on a tractor you Dyno with the PTO shaft. In 540 RPM I was at 27.5 HP and in the 1000 running at 540 it was 17 HP something. Most of the older Dynos can only be used at 540 RPM's they use water for the load. What i did was started slow and raised RPM to I got to the 540 RPM mark and then the operator loaded me and I increased RPM to where i was I was maxed out and that was 17 HP. Any more questions let me know I will do my best to answer them I have a personal relationship with my Kioti dealer. Kenny

If you are getting up to 32hp at the PTO on a CK 25, the engine would have to be putting out over 40hp. The specs are 20hp at the PTO for a CK 25.
Will it stand the test of time?

 

[dfkrug]

What i did was started slow and raised RPM to I got to the 540 RPM mark and then
the operator loaded me and I increased RPM to where i was I was maxed out and that was 17 HP.

OK, I understand. I have only seen automotive-type dynos that use rollers for the rear wheels.

Interesting that your dealer would have a dyno. Do they work on trannies and engines, too?

There has never been any Kioti dealers around here that have lasted very long. Fortunately,
they are reliable. All 3 of mine were purchased from a dealer out of state, but picked up
by me at the disti near Sacramento.

 

[Ken Kegris]

My dealer has been in business 30 + years, Almost all the dealers have a Dyno they are supposed to check the performance of all new ones but they really don't do it. As for post 73 The CK25 is a 25 horse engine with from factory has 22 on the PTO now the hydro has maybe 20 hp on the pto I know the standard shift has 2 HP more on the Power take off. I was afraid of ruining the engine with it that high so that was the reason that i turned it down to 27 which should have about 25 on the PTO. Like I said in my post it burnt the paint off the exhaust pipe on a hard pull. Another fun thing to do is go to tractor shows and sometimes someone will have a dyno set up there. I hang out with a bunch of tractor pullers. In fact our fall show is this weekend, and I always help at the pull, We pull up to 10,000 pounds. we usually don't pull the real hopped up ones we are more for the antique tractors. We do pull cut tires and slightly modified, Our show is for 3 days and we pull fri night sat night and powder puff on Sunday and garden tractors Sat morning until late afternoon. I was down there all day installing a Detroit 4-71 in the saw mill so it will be ready for our antique show next weekend. I have a portable welder so I always have it handy for breakdowns All free of course. So I need to reload the truck for tomorrow and remove what i don't need. I also take my power plant down to run the stands and the CK2510 to help with the mowing. Catch you guys a little later. Kenny

 

[Adizzle]

So after wading through 4 pages of comments nobody has actually done this to the CK series tractors? Having a vested interest I was curious to see how it turned out for someone who did this on the earlier mechanical CK's. Although the engineering dissertations were interesting to read, none were germane to the OP's original question.

I know this is an old tread but thought it would answer the question and maybe help someone. I did turn the fuel up on my McCormick x1.35m which is the same as a kioti ck35. It’s as simple as getting the tamper tamper proof screw uncovered by some thin metal that incases it and screwing it inward maybe 1 turn. I kept adjusting mine till it was moderately smoking under heavy load. Made my tractor be able to run my rotary cut so much better.

 

[tman1020]

Thank you for replying. I always thought there would be a way to adjust this up a bit. Post some pictures if you feel up for it.

 

[ptsg]

I know this is an old tread but thought it would answer the question and maybe help someone. I did turn the fuel up on my McCormick x1.35m which is the same as a kioti ck35. It’s as simple as getting the tamper tamper proof screw uncovered by some thin metal that incases it and screwing it inward maybe 1 turn. I kept adjusting mine till it was moderately smoking under heavy load. Made my tractor be able to run my rotary cut so much better.

Your tractor is actually the same as the Branson 3520, unless you meant the way to adjust the fuel settings. That's more or less the same on any mechanical injection pump engine.

 

[Adizzle]

The tractor I was speaking of turning up was a previous 2012 McCormick x10.35m I owned before the 2020 McCormick x1.35h I own now. I also turned the fuel up on the 2020 McCormick because the hydro really took the power. I can’t get pictures of the previous 2012 McCormick pump but maybe I can get some of the 2020 I just traded for and turned up

 

[ptsg]

The tractor I was speaking of turning up was a previous 2012 McCormick x10.35m I owned before the 2020 McCormick x1.35h I own now. I also turned the fuel up on the 2020 McCormick because the hydro really took the power. I can’t get pictures of the previous 2012 McCormick pump but maybe I can get some of the 2020 I just traded for and turned up

Since you mentioned X1.35m on the previous post, it threw me off. My bad.