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  #51  
Old 05-18-2012, 11:44 PM
bigsnowdog bigsnowdog is offline
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Join Date: Apr 2007
Location: Midwest, US
Posts: 96
I have one in a Ferris 3100, it is carbureted. I learned of the valve problems, but also learned of the upgrades Kawasaki has done. I got both cylinder head assemblies and the cam shaft replaced for free.

I think it is a great engine. This engine on my 61 inch deck is real mowing machine. I mow a reforestation project, so I cut lengths much greater than any residential mower would ever see.
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  #52  
Old 05-19-2012, 05:59 PM
Green King Green King is offline
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Join Date: Nov 2002
Location: southwest
Posts: 536
what are the upgrades? I took off the valve cover and my exhaust valve pushrod cam off. I put it back on but it has about 1/4" gap in it that cannot be adjusted out.
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  #53  
Old 05-19-2012, 07:38 PM
bigsnowdog bigsnowdog is offline
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Location: Midwest, US
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The upgrade in my case was as I listed, both cylinder heads and the camshaft.
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  #54  
Old 05-20-2012, 01:25 PM
Ramairfreak98ss Ramairfreak98ss is offline
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Join Date: Aug 2005
Location: Burlington County, NJ
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Quote:
Originally Posted by aroddy View Post
I've got a Ferris IS3100Z 37/72, but it's the one with Fuel Injection. The fuel injection sips fuel considering its a 37 hp powerplant with a 72 deck. It gets right around 1.8 gph. r
Really an 09/2010 model had EFI? first i've heard of that but guess i just wasnt paying attention! you have any photos?
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Ford Trucks, Simplicity machines, John Deeres, Ferris mowers, Stihl/Echo/Redmax handheld equip. lots of trailers
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  #55  
Old 05-24-2012, 10:21 PM
Green King Green King is offline
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Join Date: Nov 2002
Location: southwest
Posts: 536
Well mine apparantly has dropped a valve.
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  #56  
Old 05-25-2012, 01:12 PM
bigsnowdog bigsnowdog is offline
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Join Date: Apr 2007
Location: Midwest, US
Posts: 96
Quote:
Originally Posted by Green King View Post
Well mine apparantly has dropped a valve.
How old is it? Is the engine or mower still in warranty? Regardless, contact the dealer and Kawasaki. I am thinking if your serial number was eligible for upgrades they will stand behind it.

Mine is just a couple of months less than four years old. My engine had not failed yet, but I was worried. My serial number had not been done, so Kaw paid to have both heads and the cam replaced at no charge.

Don't panic just yet, make your contacts.
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  #57  
Old 05-26-2012, 08:52 AM
WREBELMACHINE WREBELMACHINE is offline
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Join Date: Aug 2001
Location: SW MISSOURI
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I was getting ready to buy another bobcat and was thinking of one of these engines but I think I will have to go with the kohler engine instead.
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  #58  
Old 05-26-2012, 03:15 PM
bigsnowdog bigsnowdog is offline
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Join Date: Apr 2007
Location: Midwest, US
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I would like to know if anyone with the newest generation of engine, meaning the newest design revision of the heads, cam, and related parts, has had a problem. I purchased my machine in August of 2008.
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  #59  
Old 02-11-2014, 03:58 AM
banjo banjo is offline
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Join Date: Nov 2009
Location: Gold Coast Queensland
Posts: 50
My FX 34hp has just gone in for a rebuild, 3040 hours and was starting to use too much oil. Has been a fantastic motor and i'm hoping it isn't done yet ! A new engine is about $4000 here
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  #60  
Old 02-11-2014, 08:30 AM
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Triple L Triple L is online now
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Join Date: Dec 2004
Location: Kitchener, Ontario
Posts: 373
When did they rework they valve train? I bought a 2013 super z with the 37 and now after reading this thread I'm very worried, myn backfires like crazy most times when you turn it off
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