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  #1  
Old 01-06-2011, 01:08 AM
ad356 ad356 is offline
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Join Date: Dec 2010
Location: Java, NY
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Default Thinking about buying a QA42
There is a local QA42 available. I haven't looked at it yet, but I might. My plan is to get my 147 back together and running. I want to see how it runs after the rebuild. When I rebuilt it, I torqued the rod bolts to 280 in/lbs, have around .010 crankshaft end play, and around .060 camshaft end play. I also adjusted the valve clearance as per the service manual. everything was done according to the book so she should run great, I hope. I'm hoping for a 1st start Friday or Saturday. I have been working on it an hour or 2 a day. Today, I installed the breather, timing gear cover, flywheel, shroud, coil, and points. I'm going to use the points that I got with the engine for now. I'm thinking about buying one of the solid state ignition units, but I want to make sure it runs before I spend any more money.

If the engine runs well, which it should I think I might buy that snowthrower. I was also thinking about maybe selling my jd 37a so I could have a little more money.... not sure about that yet though, it would still be a good backup. What I might do is get a blower for the Cub and mount my 42 blade on my 112 then i would have 1 tractor with a blade and one with a blower. I don't know if it makes any sense to do that.

By the way the QA42 is selling for $200 for a complete snowthrower, I think I could talk the guy down to $150.
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  #2  
Old 01-06-2011, 10:07 AM
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Matt G. Matt G. is offline
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Cam end play is 0.005/0.010". You have WAY too much cam end play. That's going to knock really bad and sound like the engine is coming apart.
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Old 01-06-2011, 10:16 AM
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_DX3_ _DX3_ is offline
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Way too much end play.

Per Kohler Manual:
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1973: 128, ag tires, 3pt. lift, spring assist, lights, 42" Deck

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2016 XT1 42" deck 18HP
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Old 01-06-2011, 11:06 AM
ad356 ad356 is offline
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oops, i meant to say .006. i didnt have enough zeros when i wrote my post. im sorry. anyways, i was looking right at the book when i put it back together. i used the appropraite shim in the side of the cam as well. i do look at the book when i put an engine back together and i use a feeler gauge set as well. i dont even know if it is possible to have .06 camshaft end play, lol. the cam would have to be extremely worn out.
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Old 01-06-2011, 01:27 PM
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_DX3_ _DX3_ is offline
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LOL no problem, we just didn't want you to accidentally mess up a fresh motor. I look at the book too, but sometimes I think I get dyslexic as the day goes on and I misread numbers, ROF.
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1973: 128, ag tires, 3pt. lift, spring assist, lights, 42" Deck

10" moldboard plow

2016 XT1 42" deck 18HP
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