I've been waiting to read some of the reply's before posting my own. I get gas smell on me from any gas operated machine I use. My wife is always saying you smell like gas when I come in the house. I think it is because I mostly have older machines, but the direction of the exhaust has a lot to do with it. My Kohler engines direct the exhaust in the front and I do smell after using them. My 446 that I use for winter has the stock exhaust and is usually used out in the wind. Since I have a cab on it I don't get the gas smell on me and have never found to have any fumes inside the cab. If I did, I would direct the exhaust up a stack higher than the cab. My 646 has a CCKA Onan engine, which I rebuilt last winter. It has the exhaust in the front but it is directed to the side. No problem smelling any gas smell from that machine either. My two cycle gas machines like my leaf blower-vac, string trimmer and chain saw are another story. Oil mixed in the gas, smelly!Eugen wrote: ↑Wed Dec 01, 2021 10:56 am Hi gang, I have a bit of a dilemma. Let me explain. The tractors and engines I have at the moment are these:
Main tractor: 644. It came with a Kohler 14HP that seems to have been a John Deere edition. This engine doesn't smoke, feels strong and runs without a problem. Lacks the clutch but I had no thoughts of putting a mower deck on this one.
Previous main tractor: 446. This one has an Onan BF-MS which feels really strong, a beast with around 110 psi compression on both cylinders. Currently this is on snowcaster duty. However, I don't like this tractor because my clothes smell like exhaust after I use it. I've complained about it on the other site, and someone sent me a private message telling me that Onan engines are like that. Hard to believe right? But how can the very strong exhaust smell on me be explained, with strong compression and strong engine?
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Tractor #3 is 224. This one has the K321 that I rebuild and runs awesome. This will be my mowing tractor I think.
Tractor #4 is a 444. My latest acquisition. All wheels need to be replaced, the TCV is stuck and probably needs to be replaced. Needs new seat, and painting. To my surprise the Kohler K321 on this machine is running like new. I'll probably make this the snowcaster tractor and sell the 446.
But!!! I have an Onan B43 engine that came with a parts tractor. The guy told me that it smoked badly when it was removed. Given that I've been so far happy with the Kohler 14HP, that I have plenty of, why would I want to rebuild the Onan 16HP? Is the large difference in price really worth it? Plus, will it still make my clothes stink even on a fresh rebuild?
What are your thoughts guys?
As an afterthought do any of you guys have OHV engines like the Briggs or Hondas? What are the results with gas smell from them?
Keep the Peace
Harry