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DillonsLawnCare
07-27-2007, 11:41 AM
which engine do you think is better?


the 25hp Kohler on the 60" lazer z AS

the 28hp Kawi. on the 60" lazer z AS


which one is better and WHY????


More torque?
More RPM's?

PBinWA
07-27-2007, 12:52 PM
My 25HP Kawasaki is a beast compared to my 25HP Kohler. The Kohler's not bad but the Kawasaki is pretty darn good.

Mr Priceless
07-27-2007, 01:02 PM
Kawasaki.
Kawasaki.
again, Kawasaki to your future questions.

P.Services
07-27-2007, 01:24 PM
Kawasaki.
Kawasaki.
again, Kawasaki to your future questions.

i agree times ten!! much better engine in every way

J&R Landscaping
07-27-2007, 04:28 PM
Kawasaki.
Kawasaki.
again, Kawasaki to your future questions.

Ditto! I agree!! Kawasaki all the way!! :weightlifter:

All_Toro_4ME
07-27-2007, 04:29 PM
Kaw all the way.

deere615
07-27-2007, 04:31 PM
I have a kohler on my JD and it is a good engine, buy I voted kaw I believe they are a much stronger engine

Mr Priceless
07-27-2007, 05:46 PM
ok, ok, all opinionated responses aside, I'll list you the comparisons of the Kawi and the Kohler.

25HP Kohler Specs:

MODEL Command CH730
MAX. POWER @ 3600 RPM hp (kW) 25 (18.64)
DISPLACEMENT cu. in. (cc) 44.0 (725)
BORE in. (mm) 3.27 (83)
STROKE in. (mm) 2.64 (67)
PEAK TORQUE @ MAXIMUM lbs. ft. (Nm) 39.9 (54.1) @ 2800 RPM
COMPRESSION RATIO 9.0:1
DRY WEIGHT lbs. (kg) 94 (43)
OIL CAPACITY U.S. quarts (liters) 2.0 (1.9)
LUBRICATION Full pressure w/full-flow filter
DIMENSIONS L x W x H in. 13.8 x 17.7 x 19.0

28HP Kawasaki Specs:

MODEL FH770D KAI
MAX. POWER 28.0 (20.9 kW) @ 3600 RPM
DISPLACEMENT cu. in. (cc) 46.6 (764)
BORE in. (mm) 3.15 (80)
STROKE in. (mm) 2.99 (76)
PEAK TORQUE 47.6 ft. lbs. (64.5 N*m) @ 2200 RPM
COMPRESSION RATIO 8.1:1
DRY WEIGHT lbs. (kg) 98.1 (44.5)
OIL CAPACITY U.S. quarts (liters) 1.7 (1.6)
LUBRICATION Full pressure w/full-flow filter

Of the 2 engines you asked about compared:

Shaft:
Both=Horizontal

Cooling Method:
Both=air

GPH (Gallons per Hour)

I didn't catch any number reports from either engine, but I think it's safe to assume the Kohler will be at least more gas efficient.

Longevity:

This paricular Kaw hasn't been out nearly long enough for anyone to share any experience on the time of significant wear.

After a little research, the a fellow lawnsite member had put 1600 Hours on his kohler and had to replace the entire engine. Search "CH730".

At this point i really don't feel like doing any more research. All i can say is take full advantage of the Search Feature on this website and most of your questions can be answered with a little time and effort without having to be spoonfed on every inquiry of yours.

But in a nutshell, doing the little bit of Research I did, the Kohler and Kawasaki both have their highs and lows...also for the record, kawasaki can have numerous problems with their engines and so can Kohler, which is why I suggest you find out which engine brand gets the best dealer support.

The last paragraph I typed was based on this link:

http://www.lawnsite.com/showthread.php?t=186669&highlight=28+HP+Kawasaki

knock yourself out.

DillonsLawnCare
07-27-2007, 08:29 PM
thanks....................

bigbear
07-27-2007, 08:39 PM
wish they still made the 28 kohler

Langford2000
08-01-2007, 09:41 AM
Kaw all the way - Kohler is a great commercial grade engine but I think the Kaw is built better.

kellymctampa
08-02-2007, 08:31 AM
i have rebuilt both... kawasaki and kohler... the only problem with the kawi is that if the upper or lower main bearings go out... (which they will eventually) kawasaki will only sell you the upper or lower half of the motor... a few hundred dollars for each.... (RAW DEAL) ... especially when the bearings are less than 7-8 dollars apiece.... BAD BUSINESS!!!
kawasaki's and kohlers are both great engines... kawi may have a bit more butt... but if you treat either of these engines right.... they last for years and years....

Country
05-08-2008, 02:03 PM
Another vote for Kawi.
It's a hoss!

02DURAMAX
05-23-2008, 06:13 AM
Kawasaki For Me!!!

S.A.L.
07-04-2008, 10:39 PM
You can't argure with the torque the Kawi puts out at a lower RPM.
That's the difference everyone feels.
That's one fat torque band.
Extra stroke please!

Milwaukee
07-04-2008, 11:20 PM
kawi they throw rod when it reach 1,200 hours or up. plus coil is very expense than you think.

Kohler are expense but it seem last longer and last one I have run over 1,965 hours but tractor was junked. it still run.

I think Kawi is good but not great when they have high hours like over 1,000 it start have little problem then later it get worser.

Kohler I grew up with them It seem that Kohler make engines for many tractors. I have forgot to change oil but no sludge plus they run little loud but have much power when low throttle like mid it work great but high rpm seem not great like it bog fast.

But biggest problem we have no Kawi Dealer in our area and they are 40 miles away but we have Kohler and brigg dealer which is 3 miles away from us.

Well before you buy make sure you have Kawi or Kohler dealer near your area plus how parts available?

nosparkplugs
07-06-2008, 02:55 PM
Depending on the ZTR manufacture sometimes we don't have a choice of a specific engine. I have found that Kohlers are dependable engines, and with a simple change to Synthetic 15w-40 oil I have had zero problems with our Kohlers in high ambient temps

Green Team Landscaping
07-06-2008, 03:00 PM
kawasaki is gonna be more reliable imo. kohler isstill agood tough engine thoguh.

Self_Paid1
07-07-2008, 12:03 PM
NoSparkplugs How Often Do you change the oil on your Walker with the 15-40w

Lawn-Sharks
07-07-2008, 10:24 PM
My 21hp kawi has over 2,600hrs (original) on it and it still runs strong!

monro
09-23-2008, 06:20 PM
nothing but kaw for me:clapping:

dura to the max
09-30-2008, 12:47 AM
kawasaki gets my vote.

ltmarkb3
10-01-2008, 12:20 PM
Iv had both In my 11yrs of business kaw does run strong but way more carb problems all my kohlers start easier and run strong with a lot less issues.

Kglenn04
10-01-2008, 07:17 PM
kawasaki gets it done for me

Kennedy Landscaping
10-01-2008, 10:33 PM
I have an 18hp v-twin Kholer Command and it is a great engine. However I just bought my Gravely with a 13hp Kawisaki and it runs very well too. The Kawisaki only has 152 hours on it and running strong. But the Kohler Command has close to 600 and haven't had a single problem.

So in my opinion I like them both. We'll, see how the Kawi is doing at 600 I guess

STIHL GUY
10-02-2008, 11:31 PM
They both have their pros and cons

rob7233
10-07-2008, 12:02 AM
Generally, Kohler power ratings are overrated and the Kawasaki ratings are generally underated or conservative from the factory specs.

So, IMHO you get more from the Kawasaki even with identical spec ratings between the two.