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B Valve Adjustment

M

Mark - IN.

Well-known Member
Fellas,

Since I have the valve cover off to inspect the 3 freeze plugs, figure will check the valve lash if I don't have to pull the head over the antifreeze that I found in the oil a week ago. I tried searching the archives for "B valve lash cold" and came up with 25 items, none of them the adjustment tolerance. Anyone know how many thousands cold?

By the way, was remarkably clean under there. No glop, gunk, goop, or build up of any sort from decades of use. Detergent oil is a good thing.

Also, I noticed what appears to be a casting date up top on the spark plug side between cylinders 2 and 3 of "8 31 39". Anyone know, is that where they put the casting date?

Thanks much in advance.

Mark
a156533.jpg
 

Since the Rockers are worn where they contact the vale Stem, use caution when using a thickness gauge, or use a Dial-indicator...

Ron.
 
Thanks Ron. I noticed as I guaged them that on some angles the feeler guage was tighter than others, wear. What I tried to do, was to find the wear and work based off of that. Seems ok. No chatter or anything of the sort. Used it to mow today. Tomorrow will drain the new oil and see if there is any antifreeze in it. Was a little antifreeze in the oil when I changed it a couple of weeks ago after setting in the barn for about 5 months during a brutal winter. First time ever for antifreeze in the oil. Not a lot, but enough to send up the flags. After cooling and setting over night, will drain it tomorrow and see if was a fluke, or going to have to take the head off and go after O-rings, sleeves, or...

Thanks again.

Mark
 
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