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Go Back   Only Cub Cadets > Cub Cadets > Cub Cadet Engines > Kohler Engines
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  #1  
Old 11-15-2016, 09:27 AM
jim nicholson jim nicholson is offline
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Location: Lisbon, Ohio
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Default Courage V twin
I have a 25 HP Kohler courage V twin vertical shaft engine in a Cub Cadet.
Model # SV730-0011
Ser # 3608135143
The problem is the starter wont turn it past the compression stroke. I have adjusted the valves to specs,installed a bigger CCA battery.The engine has about 700 hrs on it and runs great but I have to use a jump starter to crank it over, It has been this way since the first 100 hrs. I have been told it may be the compression release on the camshaft.Does anyone have any input on this problem, or know of any Kohler updates pertaining to this.
Any help greatly appreciated.
Thank to all, Jim
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  #2  
Old 11-15-2016, 09:46 AM
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Sam Mac Sam Mac is offline
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Here are a couple threads you may want to check out.
http://www.onlycubcadets.net/forum/s...ad.php?t=42634
http://www.onlycubcadets.net/forum/s...ad.php?t=39441
http://www.onlycubcadets.net/forum/s...ad.php?t=43225
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Old 11-15-2016, 11:55 AM
jim nicholson jim nicholson is offline
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Default Courage V twin
I just looked at these posts and the only one I haven't done is pull and disassemble the starter. All grounds and cables connections are good. I did have a loose cable on the solenoid and it had gotten pretty warm at some point last year. The solenoid has been replaced and still the same problem. Parts Tree shows no compression release and even the camshaft is not available anymore.
Some of the pulling Cubs use an automotive starter conversion on their high compression engines. They use a Toyota Camry starter but it may not work on my engine.
Thank you for the help.
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  #4  
Old 11-15-2016, 12:48 PM
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Jim, sell that thing at the Roger's machinery sale!
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  #5  
Old 11-15-2016, 01:02 PM
Mike McKown Mike McKown is offline
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Quote:
Originally Posted by jim nicholson View Post

The problem is the starter wont turn it past the compression stroke. I have adjusted the valves to specs,installed a bigger CCA battery.The engine has about 700 hrs on it and runs great but I have to use a jump starter to crank it over, It has been this way since the first 100 hrs.
When you use the jumpers, do you jump at both posts on the battery or bypass BOTH cables and go straight to the starter cable lug on the starter and the engine block?
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Old 11-15-2016, 01:24 PM
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Leadslingingdaddy Leadslingingdaddy is offline
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I cant imagine that engine has that much compression..?
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Old 11-15-2016, 01:37 PM
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I cant imagine that engine has that much compression..?
X2! There is some other problem here.
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Old 11-15-2016, 02:42 PM
jim nicholson jim nicholson is offline
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I have jumped it directly to the starter and engine block, and on the battery also. Doesn't seem to make any difference.
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Old 11-15-2016, 03:55 PM
Mike McKown Mike McKown is offline
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Originally Posted by jim nicholson View Post
I have jumped it directly to the starter and engine block, and on the battery also. Doesn't seem to make any difference.
Well, if you jump straight to to the engine and it cranks good, that rules out the engine and the starter, doesn't it?

If you jump at the cables at the battery and it cranks good, I'd suspect you have a bad connection at the battery or maybe, a battery cable that is frayed or corroded inside the insulation of the battery cable.
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  #10  
Old 11-15-2016, 05:01 PM
jim nicholson jim nicholson is offline
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Yes, it does have considerable compression.
All cables and connections are good. I kind of think I'm looking at a broken compression release [ if it has one ] or an internal starter problem.
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