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Onan 140 Elite crankcase gasket

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I have an Onan 140 (14 HP) torn down to the point where I'm ready to remove the front part of the crankcase in order to replace the gasket. My question is, when I unbolt it, will it slide right over the PTO shaft? Do I need to replace the oil seal there? Thanks.

Refer to this thread - I had the same problem:


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So I found that the crankcase half just slides right over the shaft, just by doing it. I procrastinated a long time.

Here are pics of my tear-down. I wonder if that gear snags on the gasket a little and causes this?



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    • Dean McFadden

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      Good morning peeps! I’m always searching for helpful information with my AC collection. Hope to find out new information and pass on my own experience in restoration. Here are some pics of my babies. I’m still looking for front rims for the 410 so yesterday I put the 310 wheels on took it for a drive. Working pretty good but still needs some carb work. Gotta get the 310 running next. Have a great day!😁

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    • thedaddycat

      thedaddycat  »  SmilinSam

      It's in pretty sad shape, but yes I have a yellow plastic cap that I'm fairly certain is what you need. PM me your details and I'll get it out to you.
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