Hustler Super Z - Kawasaki 850V engine.

Cousin has a Hustler Super Z zero turn mower. It's a 2010 model. We
think one of the coils or plug wires are bad as it will run rough after
one to two hours of use. Dealer has worked on it twice, cousin has
worked on it with no improvement.
My question is that it looks like a big job to get to the coils to
replace them. If the Kawasaki engine cover has to come off then the
mower looks like it must be mostly dissembled. It is a Kawasaki 850
engine. Can we cut an opening in the engine shroud to get to the coils?
Is there an easier way?
Hope someone here has experience with this.

Thanks
Dave
 
Its your engine, you can cut it up if you want to. I wouldn't. I am guessing that is one of the models that had the air cleaner attached to the roll bar. Just take the whole thing off. That is what I did when I replaced the engine on one.

What did the dealer do to it? If its within 30 days, I would contact them.

You really need to determine whether you are losing spark or compression before you start cutting it up.
 
Cousin is going to pull plug wires one at a time during next failure. Now that you mention it that won't tell if no spark or no compression. Problem seems to happen when engine gets warm after an hour or so of mowing. What makes makes you think about compression? I hadn't thought of that so tell me more.
Sure looks like a lot of work to get the cover off that engine.
Thanks for the reply.

Dave
 
welcome to the world if commercial lawnmowers! Yes, they sometimes are difficult to work on.

You really need to determine if you are losing spark or compression (or fuel-I have seen a lot of that lately-water in gas) before you go cutting holes in the cover to make changing the coils 'easier'. Although you really need to close up any holes you make so the fan can keep the engine cool. Its not a Harley going down the road at 55 mph.

If you are losing compression, one valve could be out of 'lash' or clearance and actually holding the valve open when it gets hot. Then the fuel/air mixture does not compress properly and because it is not compressed enough, that cylinder quits firing, even though you may have really good spark at the plug.

Spark testers can be bought from Harbor Freight for about $6-$10.
 
sounds like you lost coil, they usually do that after things get good and warm. pull top off and install both new, life goes on. does it change if you pull choke out, if it does then its on the fuel side instead. also what did the other s do to it cause sometimes help has done more harm than good. that unit could have the (sam system) which there was update conversion for those units.
 
You should check the valve clearance if it hasn't been done, it's very easy to do, and I was able to re-use the gaskets without a problem. I found detailed instructions by googling it.
 
My zero turn has a Kawasaki FX850 V twin cylinder engine, 27 hp. This is the 5th summer I've run it, a service tech on another forum posted pictures of a similar engine with cooling shrouds removed, grass layered on thick, engine had over-heated and scored pistons. I changed the oil/filter on mine and took all the cooling shrouds off. About 18-20 screws total including the 4 holding the spinning grass screen onto the flywheel. I was actually surprised there was NO accumulated grass laying on the engine castings.

I can't stress strongly enough to NOT cut the cooling shrouds up. They will never go back on properly again. I had both of my ignition coils right there on top in about 15 minutes, and about ten minutes to put everything back on. My air cleaner, 2 stage dry type filter typical Kawi filter, had 2 screws holding the one bracket on, and I had to remove the air hose from filter to carb, simple hose clamp.
 

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