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JPLAWNSERVICE
05-15-2005, 05:17 PM
I have a Gravely 144z with the 17hp Kawasaki engine. The mower now has 45 hours on it and has been to the dealer 5 times over the engine. I really like this mower but I am disgusted with the way it runs. It might mow perfect tomorrow and the next day it will be running along and start cutting out on me to the point that you can't even mow. The dealer says he can't find out the problem since it is intermittant. They have changed the plugs, fuel filter, fuel pump and still not fixed it. I believe they even changed the coils. While the dealer had it they loaned me a great dane with the same engine, and after a while it started acting the same although the dane's engine had 1400 hours on it, so I am not sure if it is the same problem. Has anyone else had problems with the 17hp kaw or is it just me?

Cut 2 Please
05-15-2005, 05:24 PM
I have a 17 Kaw on one of my Exmarks. I have never had the problem you are talking about but mine is hard to start some times. Try replacing your air filter and see if that helps. I know mine starts running poorly if the air filter gets even a little dirty.

South Florida Lawns
05-15-2005, 05:32 PM
Could this be a possibility? If there is dust particles in the fuel lines some how getting past the filter this could cause the engine to run harsh and or cut out. Also make sure that water doesn't get mixed in with the fuel which could mess with engine performance.

JPLAWNSERVICE
05-15-2005, 05:43 PM
I don't believe it is water in the fuel because it has done this through every 5 gallon can of fuel I have run through it. I have even used water seperator in it and it didn't help any. The air filter has been changed. Any more ideas?

dfor
05-15-2005, 05:44 PM
I have a 17 Kawi. My first thought was the coils, but you said they were replaced. Second thought is the fuel. I went to a certain gas station a few times, and I remember the mower running awful. My sisters car did the same, I asked her where she was getting gas. Same place. Can't think of what else it could be.

Richard Martin
05-16-2005, 05:21 AM
Hmm... You may be looking at the wrong system. A mower is a group of systems that when put together properly should cut grass. Basically you've got your drive system, deck system, engine system, controls system and electrical system. I really think you should be looking at the electrical system and specifically the safeties. What I want you to do is start the mower and see if you can disconnect the wiring harness without the mower shutting off. There should be a connector on the right hand side of the engine with several wires coming out of it. Just disconnect it. If the mower continues to run try to turn on the blades. If the blades come on you're all set to test the mower.

The next time it starts acting up disconnect the harness and see if it straightens out. If it does then the problem is in the mower's wiring somewhere, probably the safeties. If it continues to act up then the problem is in the engine. Just remember to reconnect the harness or you will not be able to shut the mower off.

Runner
05-16-2005, 07:22 AM
I was going to go in that direction, but Richard has just explained it to you...actually better than I would have. :)

BobcatZT
05-16-2005, 08:57 AM
Our 17hp Kawi's were having the same problem. We tried everything, and nothing changed. The spark plugs were gapped at .025, I gapped them at .030 and they been running much smoother.

jh701
05-16-2005, 11:07 AM
My Gravely 44Z was doing the same thing. I drained the fuel, checked all fuel lines etc... no change. What did finally correct the problem was I loosened the screw at the bottom of the bowl on the carb and let the gas in the bowl drain out. Not a problem since. Maybe there was some moisture at the bottom of the bowl.

gramps
05-16-2005, 12:01 PM
try gassing at a different station.

Fareway Lawncare
05-16-2005, 03:59 PM
The Gas Cap is Not Venting Properly...neXt Time it Starts Cutting Out Open the Cap...if It Starts Running Fine..Replace the Cap.