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  #1  
Old 12-08-2011, 08:45 PM
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ksmith ksmith is offline
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Default Need some help with a "HOT" 10 horse...

Hi everyone, I have a K241 that is running really hot. Blowing fire into the muffler, and cooking all the paint off. What could be going wrong? It starts and runs great until it warms up, then it only runs good with the choke pulled half way out. Any ideas? I need to address the problem tomorrow, or Saturday at the latest. The engine in is one of my "Little" tractors. I'll post some pictures in the custom area this weekend.

Any help or advice would be GREATLY appreciated. The tractor is leaving for Nebraska Sunday afternoon, so I need to figure this one out quick.

Kurt
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  #2  
Old 12-08-2011, 08:50 PM
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The way it sounds i would say it's running lean.
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  #3  
Old 12-08-2011, 08:54 PM
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I agree, If you have to pull the choke out to make it run right, its not getting enough fuel on its own. Or you somehow are getting to much air. If the carburetor is clean and adjusted right then check for leak around the intake gasket or the head gasket.
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Old 12-08-2011, 09:26 PM
Merk Merk is offline
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Can you post or send me a picture(s) of the exhaust system?

My Dad tried to run a straight on his narrow front Cub. The Cub had a cap with holes drilled in the cap to help quiet the engine in the middle of the exhaust system. He had some overheating problems and it took longer for the engine to speed up.

He removed the cap and installed a muffler from a Farmall Cub and the motor has been running good since them.
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  #5  
Old 12-09-2011, 06:59 AM
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ksmith ksmith is offline
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Thanks for the ideas everyone.

This is the exhaust system. It's stock Cub Cadet except for 2-90 degrees and some pipe...

I played with the carb adjustments, but honestly, I've never been too good adjusting carbs...

Last night I played with the timing a little, and now it's not exhausting orange fire, only a little blue... I'm more than a little frustrated right now. A friend thought it may be sparking too late, and that's why it's coming out so hot. I'm going to get a new set of points this morning and see what can be done with them.

I'm hoping this morning will bring better luck.

Kurt
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  #6  
Old 12-09-2011, 07:03 AM
R Bedell R Bedell is offline
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Being a HVAC/R Tech and dealing with piping & ducting, those two 90° Elbows are causing a partial restriction. I would suggest up sizing the diameter of the pipe & fittings leaving the muffler.
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Old 12-09-2011, 07:13 AM
R Bedell R Bedell is offline
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As a TEST, remove the piping arrangement from the muffler outlet and beyond, and see if the heat diminishes.
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CC Models: 100, 105, 1450, 782, (2) 784, & 2072

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  #8  
Old 12-09-2011, 09:56 AM
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Default Wow...

Did this just change, or has it always been this way? Looks like the carb was recently rebuilt too. If it was good before you started changing things, it's probably not the points.

Get the timing set dead on, then ~2 turns out on the mixture screws should be in the ballpark. If you set them to that range, what happens?

John
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Old 12-09-2011, 10:09 AM
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"High Test" or 93 octane fuel burns slow, same as changing the timing.

What fuel are you using?

I think I read one manual that called for 85 octane!! I can't get anything lower than 87!!

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  #10  
Old 12-09-2011, 10:12 AM
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Default hot 129

Hi everyone. I'm having the same problem with my 129 . Rebuild the carb. Decorboned the head. Found out its bored .30 over. Got it running and the muffler glows. Trying to adjust the low idle. I have hydro lift off a 149 on her was wondering if they need to be in a certain spot..? Up ? Down ? In the middle?? Thanks
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

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