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  #11  
Old 10-25-2012, 07:07 AM
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4SPEED 4SPEED is offline
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I like crusing the tractor shows with my 125. but not at 2800 to 3200 rpm.

I will check into having the crank balanced. that does make more sence then taking a chance on getting a hole in the block.
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  #12  
Old 10-25-2012, 07:54 PM
Mike McKown Mike McKown is offline
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I have about 18 Kseries Kohlers and I've never seen the balance gears cause a problem. I do have one that runs very rough and I suspect someone has removed the gears under discussion.
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  #13  
Old 10-25-2012, 08:03 PM
lwrehm lwrehm is offline
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You could always get a Crankshaft Balance Plate Kit from Kirk Engines.
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  #14  
Old 10-25-2012, 08:28 PM
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OverKnight OverKnight is offline
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Default 12 hp Balance Gears
Has anyone tried the balance plates from Kirk Engineering?
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  #15  
Old 10-25-2012, 08:57 PM
lwrehm lwrehm is offline
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I have not, but I'm thinking about if/when I get around to rebuilding the 10hp I have sitting around. Only $20, so I skip the good beer for a couple weeks.
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  #16  
Old 10-25-2012, 10:05 PM
samiam44 samiam44 is offline
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I just rebuilt my K341,

It had no balance gears- I thought long and hard about changing the balance weight. I read a long article on varies ideal balancing for single motorcycle engine varies by the installation and cylinder orientation.

I'm not convinced lowering the vertical and doubling the horizontal secondary moments will make it feel smoother or rougher. The larger side to side seems like it would be worse.. So I choose to leave it alone.


Michael
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  #17  
Old 10-26-2012, 01:07 AM
bkw3614 bkw3614 is offline
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Doug,

My K-301 runs rough too, so much that I was once concerned about the fillings in my teeth.

I have a Quietline, and while I haven't had the pan off that engine, I believe that Kohler left out the balance gears on the engines used in the Quietlines. To counteract the problem, I tightened the ISO mounts and opened the crack screw on the carburetor a little bit. It helped.
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  #18  
Old 10-26-2012, 07:34 AM
JayJay JayJay is offline
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Smile Crack screw?
Quote:
Originally Posted by bkw3614 View Post
. . . I tightened the ISO mounts and opened the crack screw on the carburetor a little . . .
Brian,

What is the "crack screw" on the carb? Or did you mean to say you "cracked the [Idle Fuel / Main Fuel / Idle Speed] screw [open/closed] a little" on the carb?

--Just giving you a hard time, but seriously, didn't you adjust the idle speed up to the QL specified 1,000 RPM or so?

Jeremiah

If you've found a "crack screw" I hope you haven't been "using" --the only thing you should be smoking near a Cub is gasoline and 30W oil (with perhaps a dash of Marvel Mystery Oil).
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  #19  
Old 10-27-2012, 08:20 AM
jeryan149 jeryan149 is offline
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I just had a balance plate from Kirk engines installed on a K321 crank. I'll definitely post the results once it is back in my 149. John
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