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#1
11-20-2025, 03:29 PM
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149 smoker
Hello everyone. I took the head off to check for a blown head gasket. Gasket didn't appear to be blown but a trail of burned oil came from the piston at a point near the exhaust valve and over to the valve. It looks like it has been recently rebored 010 over. The cylinder shows no trace of honing marks. Is it possible to install the rings incorrectly or could the oil be coming from the exhaust valve? Thanks and have a great day.
Bob 
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#2
11-22-2025, 08:34 AM
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Recent bore? No cross hatch? I'm afraid it could have been just a bad quickie refresh by previous owner... probably in attempt to spend low and sell high.
Looks like a do over to me....properly this time. You could start with mic on the cylinder and see where you are at for starters. Then there's crank and valve specs consider while you are at it.
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Two 125's and a 124 all with 42" decks Plow blade #2 Cart QA36 snowthower
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#4
01-04-2026, 05:50 PM
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Start by checking the level of your oil and see if it is beyond full. The head gasket may still be the issue, too. The cheaper gaskets do not seal off the layers, allowing oil to blow through the seal and out. Also, the torque of the head bolts may not have been to specs or may not have been in the correct order. If you already have the head off, did you check to see if it was warped or planed correctly? Several things to check out.
Cub Cadet 123
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Still don't know what I'm doing in OHIO?.....If you find me, then please point me back toward INDIANA. 
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
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