Ac 712H kohler 12hp blowing out oil
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=105340
Printed Date: 26 Nov 2024 at 10:23am
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Topic: Ac 712H kohler 12hp blowing out oil
Posted By: Skeeter
Subject: Ac 712H kohler 12hp blowing out oil
Date Posted: 26 Apr 2015 at 10:44pm
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I just bought an allis 712H previous owner had the kohler 12hp k301 rebuilt. New .010 over piston and turned the crank .010 under. Did not put new valve guides in and the valve do not look new. But he said that it now blows oil out the breather and and carb and it was running rough. He said he rebuilt the carb and installed new points. Any tips or points to look for when I start working on it. He had the head off so I have not started the engine yet. Also a cool feature I saw is that some added 3" wheel spacer to the rear axle. Looks pretty cool with the wide stance. Are these common. I think they are dual wheel spacers
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Replies:
Posted By: Steve in NJ
Date Posted: 27 Apr 2015 at 6:36am
Blowing oil out could be a few things from simple to the engine having an internal problem. First make sure the crankcase isn't overfull of oil. That's the simple part. I guess if the valve train was in real bad shape it could blow oil, but I usually see em' burn oil before I see small engines blowing oil out. Possibly ring end gap not correct? Tough call there. My old Kohlers leaked oil. LOL!
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Posted By: HudCo
Date Posted: 27 Apr 2015 at 8:36pm
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sounds like the middle of the breather is missing or damaged oil in the carb probley if breather connects to the air cleaner if it has excessive blowby then there must be some piston, cylinder problem
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Posted By: ACmowerguy
Date Posted: 27 Apr 2015 at 10:12pm
The breather may have been assembled incorrectly.
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10 various B-series garden tractors, AC Homesteader8, 416 hydro,710 gt, 914, 916H, 917H, 920D, and many misc attachments
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