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#1
03-15-2015, 04:55 PM
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Mechanical PTO question
So, the engine on my 149 died an untimely death about 1.5 years ago. I finally got around to putting in a replacement engine today. The replacement engine came with a different style mechanical PTO than mine originally had, so I took it off and replaced it with mine (has the dome shaped "button" in the middle of the PTO on the front). Once I got everything wired up, I tried starting it...nothing! Well, after about an hour of checking the battery, ignition switch, solenoid, coil, SG and all wires in between, I realized that the PTO was engaged. After disengaging it, the tractor started right up! However, there was what sounded like a squealing noise coming from the front of the tractor. I checked the SG belt and it wasn't rubbing on anything and the tension seemed good. I did notice the that PTO was not disengaging. With the tractor not running, I can disengage and spin the PTO by hand. In looking at my model 73, it looks like my PTO is installed farther back on the shaft on my 149 than it is on my 73. Could this in any way be causing the "squealing" sound and also cause the PTO to not disengage with the engine running? When it was installed on my old engine it worked perfectly. Thanks for your help.
Jason 
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#2
03-15-2015, 05:46 PM
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The squealing may be the pto bearing.
I have done that before,oh pull back on the pto handle and THEN start it.
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#3
03-15-2015, 10:24 PM
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the bearing needs to be about an 1/8" shy of being flush of the end of the crank. if it's on too far the end of the bolts could rub the basket pulley, the spring plate in the clutch could also hit the end of the crank
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#4
03-15-2015, 11:11 PM
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Correct me if I'm wrong but what you are saying is that when the engines runs, the pto runs also.
If that is the case, everything is turning together all at the same time, therefore with everything turning there should be no squeal. I could understand a noise if the pto wasn't turning and the engine running. Is the squeal still there with the engine running and the release lever in the forward position? If the pto turns with the lever pulled back, it won't take long to ruin a fiber button. Just some thoughts.
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