I purchased a new John Deer 700 series mower with a 23 hp Kohler engine ,thay engine had problems made terrible noise Dealer said they could;nt find anything wrong ,it finally threw a rod or rod cap and they replaced with a new 19.4 hp Kohler . The new motor has plenty of power and runs good the problem I have with it now is when it's sats in my shop for a week or longer when I crank to mow it floods my shop with smoke ,it's seems to be oil smoke not gas smoke ,after the first initial cranking it does not smoke and if cranked every couple of days it does not smoke. The local John Deer Tractor dealer shop manager says this is common for Kohler engines and is not concerned but I am
I think the 19.4 is for KW and that eguals out to the 23 or so horsepower. Same engine as the one you had before. Smoke on startup seems to be common on new engines now days. My Kohler does it sometimes as well, seems to do it more after the prefilter is freshly oiled and wrung out. If the oil level in engine is not going down my dealer says it is fine.
#3
reynoldston
If I had just payed big $,s for a new tractor with a 23 HP Kohler and they had to replace it that is what I would want back into it. Not a KW Kolososki is that what KW stand for?
KW is something I never heard of with a gas engine. kilowatts sounds like something to do with electricity. Enlighten Me on this???
#6
reynoldston
I know I am a dummy but I never came across the kilowatts in place of horsepower or ever seen a reason to do so. But I always like to learn. This is what I found out but I know everyone knows this already.
Multiply the horsepower rating by 745.699. This is the number of watts in one horsepower. Dividing that product by 1,000 will give your engine's power in kilowatts.
#7
scott47429
why would you even want to go through that i like the horse power rating why change something that works so well
#8
Parkmower
I thought KW meant Kawasaki. And KH meant kohler. I've seen models like a 1050KW and a 1050KH. Only difference was the Kawasaki or kohler.
I agree with you 100% but I wasn't the one to start it.. Now back to the original question. What in the world did they use for replacement engine in river rats John Deere and why would they not install what they took out??
I may be wrong, but I think this thread is a test. 1. What engine manufacturer would replace a 23HP engine with a 19.4HP engine? 2. Who would accept this replacement? 3. To my knowledge Kohler does not make a 19.4HP engine. 4. RiverRat has never replied. 5. KW= Kindof Wierd!
#11
SONOFADOCKER
Add a $2.00 fuel shut off valve on the fuel line just before the carb.
See what it does next week at start up after the valve has been off .
Hp vs. KW is the equivalent of standard vs metric.
In europe etc.. They measure using kilowatt rating vs horsepower.
If you research it,KW is a superior measurement for power.
HP is a function of torque,and torque measurement was developed by a guy that measured power by how much his horse could lift like 10lbs 1ft in the air using a rope over a treelimb in x amount of time or some such.
I would have to pull my old book out for the correct/complete story on it,but my opinion is as a measurement torque and hp is basically a joke.
However us americans hate change,so we stick with what we know I guess.
(this is all off the cuff,read up on it for a better,truer,more thorough explanation).
As far as a new engine smoking,i've read of this issue and as the last poster suggested it seems to have something to do with carb flooding due to vacuum or something after shutoff I think.
Be helpful to know what color the smoke is.
Fuel is black,oil is blue and water/coolant is white
Some engines do consume fluids like oil due to design (northstar oil consumption,one of top 10 engines in the world anyway) and some due to design flaws (chrysler pt cruisers-consumers do testing/not engineers).
I'm betting your issue is the latter.
(all this is to be considered opinion-I was a dealer mechanic but am no kind of small engine mechanic.)
Hope something in there helps and isn't just rambling.
#13
reynoldston
With all this KW and smoking as I see it, a model 700 John Deere is 10,000 dollars worth of tractor. If I owned it I would want it right. Maybe a 1000 dollar lawn mower you could put up with it.
Def-Ed, I agree and disagree with you. Although some of the European automotive engine manufacturers due rate their engines in kilowatts, which is a measurement of power output, it is not widely accepted even there. I feel the reason for this is that a WATT is universally recognized as a unit of electrical power output, which gets confusing because both WATT & HORSEPOWER measure power output. The metric equivalent to horsepower is PS (for Pferdest舐ke, which is German for "horsepower").
#15
reynoldston
In all my working years in the repair buness and now retired in my 70's I have never come across the watts as horsepower. I don't know about you but one of the things I enjoy in the repair occupation is you are always learning something new and no two jobs are alike. As long as my health holds up I am going to keep at it and keep learning.
Lol reynolds,the only reason I even know about the KW rating is from collaborating with aussie and european friends for purposes of performance computer tuning on cars.
I've never personally used it for anything other than offhand references others have used.
Makes sense though,similar to calories which are a unit of energy also though referring to the body.
It takes X amount of "power" to create a given amount of power ie "watt".
So you hook up a given engine to a dyno utilizing a generator and it generates X amount of wattage then after you subtract frictional and conversion losses you will have the equivalent of the subjects power rating.
Again,my very generic understanding. I have always assumed it was a more efficient way due to the fact that it was either that or a guy with a horse (greatly simplified,it's been converted since to an equation).
I personally like an old fashioned torque rating,and could care less about horsepower.
If you aim for the torque,then hp is there you just calculate for it.
In the end though,it just has to be enough for what your doing.
So above all,just enjoy it eh.
