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  #1  
Old 05-14-2009, 09:46 PM
Tim S. Tim S. is offline
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Location: WV
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Default 1650 rebuilt engine problems

Just had a machinist re-bore .030 over on my 1650. He set piston, connecting rod, and crank. He also put new throttle shaft in carb. I put rest of motor back together and put in tractor. Set governor and carb quarter turn past settings according to manual. Ran on and off for awhile. Let it cool & re-torqued head bolts. Motor running pretty good and started cutting grass. Smoke coming from carb area. Tractor stalls out in middle of cut on slight slope. Kinda hard to restart but turns over okay. Let it sit for 5 minutes, & starts back up. Take it to the garage and go to pull plug to look at coming out, kinda hard stripped a couple threads out of cylinder head. If it wasn't for bad luck wouldn't have any at all. Any comments or suggestions appreciated.
Tim
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  #2  
Old 05-14-2009, 10:49 PM
murphycc
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http://cgi.ebay.com/Cub-Cadet-149-K3...3A1%7C294%3A50

Buy this and replace, + cost of gasket.

Stick your plug back in if you can and run it till you get time to swap out.


By the time you heilicoil or go back to the machinist to see if he can fix it you can just replace it.




Scott
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Old 05-14-2009, 11:27 PM
R Bedell R Bedell is offline
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You don't elaborate on it, but the smoke coming from the Carb area may have something to do with the Breather Assembly.

I personally have heli-coiled a head before and had good success. But if a good replacement was at hand, I would think about that also.

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CC Models: 100, 105, 1450, 782, (2) 784, & 2072

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Old 05-15-2009, 12:49 AM
JMD JMD is offline
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Helicoil the head it will last forever if you do it right. JMD
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  #5  
Old 05-15-2009, 06:24 AM
Tim S. Tim S. is offline
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I thought about the breather assembly, does anyone have a picture of the assembly, if put together out of order would that cause smoking and hopefully not engine damage?
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Old 05-15-2009, 06:27 AM
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RPalmer RPalmer is offline
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I agree with R Bedell. You say your machinist did the piston work. Was any valve work done on it. Improper valve adjustment or worn valves will cause smoke to come out of the crank case breather which will look like smoke coming from the carb area.
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Old 05-15-2009, 06:40 AM
R Bedell R Bedell is offline
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Tim S;

Click on this link to our Technical Library Section.... Tech Library

Then click on the link within and look at page 12.17
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CC Models: 100, 105, 1450, 782, (2) 784, & 2072

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Old 05-15-2009, 10:32 AM
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drysumpjet drysumpjet is offline
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Quote:
Originally Posted by murphycc View Post
http://cgi.ebay.com/Cub-Cadet-149-K3...3A1%7C294%3A50

Buy this and replace, + cost of gasket.

Stick your plug back in if you can and run it till you get time to swap out.


By the time you heilicoil or go back to the machinist to see if he can fix it you can just replace it.


Scott
If you have a 16 horse (K341) in your 1650, the head pictured in this auction won't work. 10, 12, & 14 HP heads have 9 head bolts, the 16 HP has 10 head bolts.
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  #9  
Old 05-16-2009, 06:59 AM
Tim S. Tim S. is offline
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Okay got a tap cleaned plug threads talked to machinest he said might have got to hot from working new piston rings to hard before they got seated possibly stuck a valve and yes he replaced one valve and cleaned up seats . He said go ahead and run engine at lower throttle speed for an hour, so I did and so far no problems. Don,t know if I have carb set right though, on a cold start it starts right up using choke, after warmed up and restarting it's hard to restart, usually 3or 4 trys with a little choke. puff of smoke shot out of airbox on warm restart.
Thanks again, Tim
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