Posted by HVFDfirefighter on August 17, 2017 at 18:13:33 from (67.45.32.157):
I just got this tractor a few weeks ago. I got it running in the barn where it was found in order to get it on the trailer easier. I put new wires on it this week. I have noticed the engine is running rough. Here is a youtube video of the rough running tractor. https://www.youtube.com/watch?v=uChQyVaGbFs
I took the air filter off and cleaned that. It was full of gunk. Took the carb off and cleaned that. Took the exhaust manifold off. Took the valve cover off. Upon inspection of the push rods, I noticed one was not under the rocker arm. This is the one closest to the gas tank (so cylinder 4). I loosened the nut and the screw on the rocker arm above the push rod enough to get push rod back under the rocker arm then tightened the screw and the nut. I then think I found out why that rod was out of place. On the opposite side of that same rocker arm is the valve (has a big spring). It will not budge. The seven other valves will move when I try to push them down and then they come right back up. This eighth one is stuck. I started to hit with a hammer, it did move a little. I then stopped hitting because I don't want to break anything. (Maybe I already did) I sprayed PB Blaster to the stuck valve every so often while cleaning the carb. It is still not moving. Letting sit over night. My question is: How do I get a stuck valve to move? I hope I do not have to take the header off. I have never gone that deep into an engine bigger than a single stroke engine. I am a little afraid. t looks like three bolts hold valve assembly on. A bunch of nuts to remove the header (8 maybe). I do have an IT manual.
I also noticed that the first three and the last three rocker arms have a string tied around each. The middle two rocker arms do not have this string. Should they?
I know I will need to buy a bunch of gaskets. The nuts holding the exhaust manifold on, are they special? They are in bad shape and need replaced. Can I use regular nuts or are they special?
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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