Super Cherry Red Muffler

[tomtucson]

I have Kohler Aegis 28's, and they have always had the hottest mufflers I have ever seen. Whole muffler glowing, I've shot it at up to 1200 deg. None of my other mufflers have ever been like that. Could they be running too lean? I don't remember the plugs looking out of line but If I was to re-jet the carb, how much bigger should I go?

 

[Doug Rucker]

Mine do the same. I was told it was normal.

 

[Kiloman]

Had a 25hp same here red all the time i took it in they said it was normal.

 

[Vince Wood]

My 18HP Kohler glows red all the time too. It just means that it's running good.

 

[tomtucson]

OK, but none of my other engines' mufflers glow that hot? Is it a Kohler thing?

 

[Vince Wood]

OK, but none of my other engines' mufflers glow that hot? Is it a Kohler thing?

My Vanguard glowed red as well. I used the same muffler off of both engines though. If I remember correctly the 24 HP Honda that's on the unit in my box van doesn't glow red though.

 

[Paul Kassander]

Yep that's a Kohler. I was told by several different kohler reps that was normal.

 

[Lightning Gene]

Guess I will have to look at my 30hp to see if it glows.....

 

[JBurd]

Someone needs to figure out an easier way to harness that waste heat into the water.