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 07-05-2000, 01:04 Post: 17715
Ron Molnar



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 loss of power

I have a 154 Cub Lo-Boy with a 5' woods belly mower. It seems to be losing power especially when I mow uphill in 2nd gear. I have changed the plugs, points etc. checked timing also. compression is 120 in three cylinders & 85 in the other. Any suggestions about rebuilding the engine or if it will even help that much. I know these engines are only supposed to be about 12 hp. Does anyone think it would be a valve problem. It doesn't really use that much oil.






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 07-05-2000, 08:01 Post: 17718
Art White



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 loss of power

Ron the engine is sick if those are the correct readings. You are also right they had no abundance of power to begin with. To rebuild will give you the power you once had or the power it is supposed to have. Will you be satisfied with that? That is for you to answer as the tractor that you would have would be all that it could be if properly rebuilt and very well be able to work for years with out trouble and at less expense than buying new. If you have short comings with the unit or it just doesn't fit your needs than by all means now is the time to trade.






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 07-05-2000, 10:45 Post: 17726
Murf

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 loss of power

Ron, there a few important items required to make a guess at the source of the problem. Does the tractor blow smoke? If so what colour is it? Is there a lot of blow-by coming out the crankcase? Is this problem a recent, sudden occurence, or did it develop slowly over time? If it is a sudden development, and it is not smoking or using much oil, I would suspect that a valve is stuck or being held partially open by some carbon, etc., try running some 'top-oil' such as Rislone, etc. through it and see if tit makes a difference. Best of luck.






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 07-05-2000, 14:23 Post: 17734
Kim Hartshorn



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 loss of power

Long before you rebuild the engine you need to consider lots of other stuff.
If you havent changed the coil I would definitly do that. Coils are the simplest and most often overlooked reason for a loss of power. This will show up first under the highest torque conditions, like mowing uphill.

kim Hartshorn






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 07-05-2000, 19:27 Post: 17740
David Paul



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 loss of power

You have identified the problem, low compression in one cylinder. We are a Case /IH dealer and rebuild several of these tractors every year. Your problem is low compression in one cylinder, more than likely it is a burned valve or sticking valve this is a very common problem in the C60 engine. These engines did not use hardened valve seats, and that is why they burn valves easily on unleaded gas. If you want to keep the tractor we would install hardened valve seats, and guides if needed, all new valves, and upgrade the pistons to the high compression aluminum type. The high compression pistons will add 2-3 HP to this engine it makes a noticable difference in power. We can supply the parts if needed. Contact:

Affordable Equipment Inc.
600 Ross Ave.
Easley, SC 29640

864-859-2623

David






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Discussion Boards > Active Subjects > Messages as Posted > Cub Cadet Forum

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