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I have a Kohler Command 7000 KT725(2017) and need to check it's high speed at 3600 rpm.
How do adjust since there is no high speed idle screw? See bottom pic.

I planning to use a digital rpm meter

The term high idle is a bit confusing.
The bolt K is what is used to adjust the high speed when the engine is not under load , ie idleing

High speed is the MAX set at 3600 rpm

I don't see so called bolt 'K' for setting it to 3600rpm. Where is it?
Can someone circle the area that needs to adjusted? Thanks.

To adjust top speed you loosen bolt circled in green and with the throttle set to fast or rabbit move cable in or out till the desired RPM is reached. Then tighten bolt circled in green down. Take care to not over rev. Good things do not come from over revved engines.

BlazNT said:

To adjust top speed you loosen bolt circled in green and with the throttle set to fast or rabbit move cable in or out till the desired RPM is reached. Then tighten bolt circled in green down. Take care to not over rev. Good things do not come from over revved engines.

View attachment 37786

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Thanks. Last year the mower went to the dealer for a choke adjustment (under warranty), because in choke mode the butterfly wasn't closed fully. They adjusted it and it almost starts on the 1st crank.

This mowing season, the fast mode seems to be under powered.
I will test with a digital tachometer for 3600rpm before proceeding.

Thanks again.

Bought chrome colored nail polish and painted one plastic cooling fin so the digital tachometer had a reflective surface to read from. ( Removed the cooling shroud to make the measurement ) At fast idle mode it read 3400 rpm, I made no adjustment since the engine only has 23hrs. Do you think I should have adjust it to 3600 rpm?

I would call it close enough.

Thanks, I will leave it alone for now and remeasure at 100hrs.

Hi folks,

I know this thread is a few months old, but I just now registered on this forum, and have just a small tidbit of info to add to the above solution, which is correct, by the way.

I bought a new Cub Cadet with a KT740 and WOT no load was only 3180rpm, and about 3,100 with the blades engaged, but before I could adjust the cable as described above, I had to remove a screw whose sole purpose is to prevent any engine speed adjustment above the 3180 rpm on my mower. I'm guessing that they were trying to limit engine speed to 3,200. Anyway, they had screwed a self threading screw through mounting bracket in such a way that it acted as a stop and would not allow the throttle to move beyond that point, at WOT. I'll take a picture of it tomorrow, just in case anyone else runs across this problem.

Anyway, I set the no load speed at 3,640 rpm, 3,500 with the blades engaged, and my goodness what a difference in the sound of the blades. I can hardly wait to see if it mows better than before.

Gil

A friend called asking if I would raise his motor's WOT RPM. He has the same motor as I do, KT740. His is the exact same mower as my Cub Cadet, except that his is a 54" deck. I removed the screw, hooked up the tach, warmed the motor, and adjusted the WOT to 3,600 RPM with the blades engaged, 3,710 no load. I asked if he wanted me to slow it down a tad, but he didn't and is very happy with it. He mowed his yard and absolutely loves the way it cuts now. As I said earlier, this bolt's only purpose is to limit WOT adjustment. It doesn't hold anything or clamp anything. It is just a screw through a hole, nothing more.

I mowed today, I'm thoroughly impressed by the difference of the cut quality after raising the WOT RPM.

Here is the picture of his mower and the screw that I removed is circled. Then adjust as BlazNT instructed.



Gil